Mercury 90hp 2 stroke hard starting adjustment. Been in an Optimax and a ProXS since then.

Mercury 90hp 2 stroke hard starting adjustment This needle valve is pushed up by the float,to shut off the fuel flow when the bowl is full. Just that the first start out is difficult. Really hate grinding the started. Another thing that may help in a faster start is to tilt the engine up in the rear 10-15*. If it doesn't improve it could be anything from a stuck thermostat to idle speed mixture adjustment. I love the boat. Otherwise mine started fine, even in the cold. I May 11, 2011 · Also, what about the carb idle adjustment. Seems every different engine needs a unique starting procedure. Small line coming from oil pump to fuel line has brass fitting connected to fuel line. Here's the history of the engine and maintenance to help narrow things down: Jan 18, 2006 · Re: 25hp 2 stroke merc, Carb adjustment If it has sat up for a few years your carbs are gummed up and a carb cleaning is in order. I acquired this boat last fall from my father who took excellent care of the entire rig. Oct 22, 2008 #1 My 2000 Mercury 90 Hp 4 stroke shifts very hard into F and R. I have never heard of any Yamaha offering a model with both a prime start device and a choke plate. So last year my motor started to act up. 7cc) Cylinder Bore 3. While Mercury is widely known for building top-quality outboard engines, it can be assumed that some users can … Mercury 90 HP 4 Stroke Problems: Troubleshooting New to this forum. Does your 90-HP four-stroke look the same? P. I haven't had to mess with them since my 1989 Mercury XR4. but starting is a whole new ball game. Pump up the primer ball 5 or 6 times then it takes several attempts to start. After 3 months (!) in the shop, the still under warranty engine was returned to me with a "don't really know what's wrong, but we got'er running". During cold weather starts I squeeze the fuel bulb until firm, set neutral throttle where I know 2000 rpm's is, push and hold key for about 3 seconds and then turn the motor over. Feb 24, 2002 · Hello,<br />PLEASE HELP!<br />I have a 1987 (I think) 90 HP Mercury six cylinder Outboard on a 16 foot fiberglass boat. Starts good. Sep 22, 2020 · Model 70 Model 75 Model 80 Model 90 Horsepower 70 (52. These are the carburetors from my 1 Jun 7, 2020 · On stopping, shut off the fuel is probably the quickest access. She'll usually start right up. Jun 10, 2016 · This a "new" 2012 engine just put on my pontoon boat. but it don't help. Aug 17, 2013 · Try again with fresh fuel and new spark plugs of the type specified, which may not be the type in it. While Mercury is widely known for building top-quality outboard engines, it can be assumed that some users can … Mercury 90 HP 4 Stroke Problems: Troubleshooting Jun 28, 2015 · I just went thru a similar adventure with a hard starting honda xr250 dirtbike. This is all after about 8-10 attempts on the starter. I have read all the rough idle posts and still have a question. 3mm) Engine Type 3 Cylinder, 2 Cycle Ignition Type C. I did raise my remote control "lever" (the single flat piece on the top of my Johnson 90hp remote control box) up to open the choke, and turned the key and pressed in for a few times (5 times) to squirt gas/oil into the cylinders to try to start. Many things can affect idle quality. Breakerless Recommended Oct 8, 2003 · Re: Merc 90 hp 4 stroke - rough idle no power Went fishing yesterday with my smooth running four stroke pressing me onward!!!! As many of you suspected it was indeed the carbs. if it runs good after starting then you shouldn't have any fuel issues. From big fish and big adventures to the next big job, make the most of what’s waiting for you on the water with a hard-working, efficient, reliable Mercury TwoStroke outboard. Starting a two-stroke Mercury outboard motor is an easy task that requires some equipment, knowledge, and patience. 62. I have had it to one repair shop who cleaned the Oct 22, 2008 · Start date Oct 22, 2008; J. It takes anywhere from 15-25 pulls on the starter rope to get going but from then on, it starts on the first pull the rest of the day. Been running great. Jul 12, 2018 · when i would start the boat with fast idle lever up it would start and run pretty decent if i let the lever down the boat would stall so i adjusted the idle got it too where it idled good when i put it in gear the boat would die instantly so i pulled the cover off again and found out the top cylinder is dry no fuel getting to it the 2nd and 3rd Portable Outboards - The water is full of big opportunities, waiting to be explored. I am not a marine engine mechanic but this is a fix that Once you have a nice smooth lean adjustment turn the needles out rich 1/4 turn to protect the motor and boost acceleration. I have 2 marks on the pump lever and one on the pump casting. Pump the primer bulb firmly. After all, having the freedom to get out on the water whenever the mood strikes is one of the main reasons most people purchase a boat. Yes, when you pull the cap off the plug, Mercury prides themselves in a 40,000 volt pulse in just microseconds! Nov 25, 2001 · Re: Compression for 90 hp Mercury You have a stuck needle valve in the carb. I have experienced the following problems:<br /><br />First, the motor was a bear to start 2-3 minutes of turning the key. Apr 13, 2013 · With a 2 stroke all you're worried about is fouling plugs, so, back the idle mix out 1 1/2 and then another quarter turn, in other words run it rich. It seems like the battery is not holding a good charge for very long. It started and quickly died. the engines auto oiler will fix the correct 50:1 oil mix with what's coming out of the fuel tank. It is another answer you can probably find in your owner's manual. Rodbolt, what do you know about this? I am open to learning something new. Do you do alot of slow speed operation if so blow it out every so often maybe do a decarb with seafoam and then adjust the slow needles again. Jul 3, 2020 · Solution is to tune up your engine to get faster starts. Customer: I have a 1988 mercury 90hp 2 stroke. 12 (1165. After it starts I can shut it off and start it all day. Sometimes it hard at first to start and runs and starts great the rest of the day. Will I still be able to use the enrichner to start the motor ? Will I have to re-jet the carbs because of the increased air flow ? Nov 23, 2010 · The boat is a 2008 Suncruiser pontoon with a 90hp mercury 2 stroke outboard. I am very new to 2-Strokes having been fixing car for nearly 30 years tarting at Porsche cars, I know a bit about 4 strokes, Ignition systes and carbs. On the good side it is relatively simple, has good power and torque (particularly for its rated horsepower as it has a large displacement), and it is not too large (particularly compared to today's giant motors) or heavy. It has worked fine up till today now she took a long time to fire up. To do so requires removal of the plate in front of the carbs. Thin she fired up. It runs great and starts right up after it fires up for the first time of the day. which one do May 15, 2010 · Greetings, I have a 96 Merucy 90HP 2 stroke (90ELPTO). 's and up was ok. i can't hear any noise when pushing the key. I have a 90hp mercury 2 stroke which is really hard to start after sitting for a few days, once started it will start every time after that unless you let Oct 24, 2009 · I have a 2006 year model mercury 90 hp 2 stroke, it runs great once started. Make sure the fuel lines and primer bulb are okay as well, they don't like varnish. Aug 13, 2023 · Last time I discussed about Mercury 50HP 2-stroke problems and now it’s about 90 hp 2-Sroke problems. Common Mercury 90hp 2 Stroke Problems At a Glance. Let it sit for awhile do it again. Non depict a choke mechanism. Steering is a 2 hander but functioning! I first thought the steering cable might be the problem but it is super smooth. I noticed it was leaking gas the yesterday. 6 kw) 90 (67. This rig is new to me as of December 2001. Anyway, either my motor needs a tune up or my carburetor whisperer skills are not what they used to be. May 29, 2012 · Hey guys i just baught a new bass boat with this motor. I could run it wide open to my fishing spot, but once I got there and dropped it into neutral, it would stall within 15 seconds. Pushing key switch does nothing. (Came with boat) Just always been a Mercury fan. I wonder what the problem was? sosmerc This is the 3rd video of me working on my 1991 Mercury 25HP outboard motor. This will free up any gunk possible frozen piston rings,etc. Like if you used it yesterday, today it will start just fine. Apr 10, 2017 · How to properly start a Mercury 5 hp two stroke outboard. does a 06 mercury 90 hp have a choke Dec 4, 2011 · For the past two weekends I have taken my boat (90 hp 2 stroke 2001) to the lake and it has been very difficult to cold start. D. I think the 4-cylinder engines, like the 115-HP model, have an approach like that. When warm the engine restarts fine up-to about half an hour or so of running time but after that it get more difficult to start I have a hard time starting my 1999 Merc 2-stroke 25HP and can't figure it out. Customer: Hey there, I have a 90hp 2 stroke Mercury Outboard engine and I was going about 20mph in forward and needed to avoid an object in the water so I turned hard and threw the engine into reverse out of instinct while going 20mph. Jul 20, 2021 · I bought this boat used about 5 years ago been running ok. My boat has sat idle for the past couple of years and I tried starting it last spring with old fuel. Sometimes she will start before the battery dies. Tilt the engine down so any gas that gets past the floats will drain into the carbs. I follow my usual procedure - high rev arm halfway, bulb primed and firm and good battery, key turn. And adjust them sequentially to get the thing done. Mar 24, 2013 · 2007 Mercury 90 2 stroke carb'd. Feb 25, 2021 · 2004 Mercury 2stroke 90hp 225 hrs Got 95,95,96 PSI compression , 2 mechanics have said all good with these numbers and equal across all three. considering that lean mixture is your problem. Cables are 11 years old and were corroded. Replaced the carburetor in 1st video, tried getting it to idle in 2nd video, now Mercury 90hp boat starting problems. 7mm) Stroke 2. Few things are more frustrating than getting everything ready for a much-anticipated stint of fishing or boating, only to discover that your outboard motor won’t start. Sep 13, 2023 · Make sure to use lubricants recommended by Mercury or your outboard’s manufacturer. Rebuilt the carbs, new plugs, new filter all around 100 hours or so ago. First let’s get a quick overview table on Mercury 90hp 2-stroke problem. Jul 3, 2020 · Seems to be getting too much oil, fouls out plugs on start up. But, sometimes when it has been idling for a while it will die. Jun 28, 2015 · I just went thru a similar adventure with a hard starting honda xr250 dirtbike. Slight compression loss on the combustion stroke will cause the fuel to bypass the rings, therefore the motor relys on the ether to combust. I wasn't in a position to spend a lot of time with the boat/engine last fall (new baby) Nov 22, 2014 · Here are the two Yamaha motors offered in 2004, one being a 90 HP two stroke and the other being an F90 four stroke. Bend the tang. Mar 9, 2021 · A slight wearing of the rings is why people say motors get addicted to ether. Jul 20, 2010 · This is my first post. very hard to start. The whole rig is my first ever bass boat and I am liking it a lot, but have a lot to learn. 375 (85. After a couple minutes rest, a battery can recover to the point where it is again able start the engine. Some Merc. <br /><br />Good luck Mar 23, 2008 · "I have a 2003 Mercury 15 hp 4 "I have a 2003 Mercury 15 hp 4 stroke tiller with "pull start". I have a 2005 Mercury 90 hp 3 cylinder two stroke Saltwater version motor on my Montauk 17 and I would also like to hear some discussion regarding the idle speed adjustment on these motors. Customer: I have a 90hp 2 stroke mercury that will not idle and is backfiring through the exhaust even at high speeds it runs rough Mechanic's Assistant: Sometimes things that you think will be really complicated end up being easy to fix. 9 outboard to start so wanted to see if you had any advice. 's 1000 r. Fast idle lever doesn't help. If you have trouble with cold starts add another 1/4 turn rich. However, like any mechanical device, they can occasionally encounter issues and require troubleshooting. Hope this helps. Sep 15, 2009 · I have a 1996 Merc 15 hp 2-cyl outboard that is virtually impossible to start. The motor ran strong until it was stored for the last deployment, has approximately 2 tanks of gas on it regarding usage (about 40 gallons) since purchase. Apr 4, 2017 · Looking to upgrade to a 90hp. Best to do this with a thoroughly warmed up engine. I have pushed the knob in and out a few extra times if the engine was stubborn to start. ? Both are Re-man's, currently rigged with Yamaha Which has been great and I have nothing against It or know much about. Figured it was bc it was 2 stroke and cold natured. Are you priming the primer bulb?Also are you pressing in the key and using the choke. Sep 16, 2016 · The Merc manual said that the test for proper low speed carb adjustment was the hole shot. Jul 18, 2011 · The Boating Forum - Mercury 50 hp problem - Hi everyone, I have a 2001 mercury 50 hp 2 stroke motor with only 250 hours on it, but for some odd reason she's hard to start up and sometimes conks out when idling and going very slow. It runs really good at higher speeds but not at idle. m. It still hesitated but not near as much. and starts great the rest of the day. Today Nov 23, 2010 · The boat is a 2008 Suncruiser pontoon with a 90hp mercury 2 stroke outboard. Took it for a run the other day for 25 mins at 5500 rpm got 30 knots no flat spots through acceleration. What i see is that the carbs are getting flooded with gas. Jan 26, 2002 · I had a 94 90 hp for 6 years no problems at all. View online or download Mercury 90 TwoStroke Operation, Maintenance & Installation Manual Mercury 90 4-stroke ; Mercury 90 Pro XS FourStroke Mercury 90 HP The 90-HP three-cylinder Mercury motor has all the characteristics of the classic carburetor two-cycle motor, both the good and the bad. Well, got it going and went a few miles shut her down fished and played hell starting her back up. guys could maybe help us out if I heard right. when it does start it runs horrible and smokes really bad (more than usual)and only at about 3800 rpms tops with muffs on in the drive way and will not idle. Looking at: 1987-1997 Mercury 90hp. No different. If all is normal, 2-stroke idle is acceptable. Any ideas on what to do? Mechanic's Assistant: I understand that you're experiencing a gas leak and difficulty starting your 1988 Mercury 90hp 2 stroke boat engine. If you're gonna do a gas in the breather start on a 2 stroke, make sure it has some oil in it. You should periodically clean, repair, or replace a 2-stroke engine’s ignition and exhaust valves. Sometimes near as good as a 4-stroke. But if it sits for say a month, it takes awhile to get fuel to where it belongs. This was in the spring of 2004. When shifted to forward gear often will stall and seems to bog down before getting to WOT but once there runs great. I have to choke her even when she is warm already and that does the trick to start her Jul 15, 2008 · Re: starting problem 2 stroke Mercury 115 outboard I would not think the side to side list would have any effect on the motor's starting ability. I'm a long way into diagnosis and part replacements but need some opinions May 16, 2011 · Re: 1971 Mercury 20hp hard to pull start If that motor hasnt run in over three years,I would get a can of seafoam spray some in the cylinders rotate the flywheel to get that seafoam circulated. Jun 27, 2011 · Re: 90hp "tower of power" reed valve problems Carbs dripping fuel, um they do this if they are choked too much. So this year I did some tlc. It is hard to get into reverse, hard to go from reverse to neutral, skips neutral and goes into forward, etc. The one that we fear the most is uneven compression. Would you believe the starting instructions call for two strokes on the primer! TOTALLY FLOODED. It will not even "sputter" or "cough" no matter how much you pull the rip Apr 17, 2006 · Re: '99 Merc ELPTO 90 HP electric primer choke You have a primer already on the engine, you must and must find out if it is working, first pull the larger of the 3 hoses from the primer to see if there is fuel getting to the inlet, if there is remove the smaller hoses and try to primer the engine to see if the primer soliniod is letting fuel thru when it's actived. Top carb 1/2 turn out, bottom carb 1-1/4 turn out and bottom carb also 1-1/4 Nov 13, 2011 · Re: 1999 Mercury 2 stroke 90hp idle problems Run a few tank fulls of Sea Foam at 3x the rate on the can (3 oz per gallon of gas) in addition to your regular gasoline. -----The pressure comes from priming the bulb before start-up. ) with the key I do 3 pumps then hold. It smoked a little, but runs great once running. Joined Sep 27, 2008 Messages 9. Weight 265 Lbs. 61. This happened several times and then the battery gave out. Nov 23, 2011 · I have a 1999 two stroke 90 hp runs fine on the hose but out on the water must be started in the high idle position and will only idle in Neutral for two to three mins before stalling. This was an improvement. Apr 4, 2014 · Re: 2005 Mercury 90HP 2-Stroke Oil Injection Issue I have the '02 year model of that engine and yes it is hard to start the first thing and it is proportional to how long the engine has been idle. -----On a 2002-115 HP there is an " enriching system "---This system injects fuel when there is pressure on the system. How long have you owned this motor? Are you sure it is not flooding from fuel? Oct 17, 2007 · Re: Mercury 90 HP 2-Stroke Rough Idle and accelaration You said you are do car repairs -- outboard floats are adjusted the same way you adjust float level in a car. Conclusion. Make sure the choke plates fit snug against the carb body. Carb was cleaned and inspected (dirty but nothing suspect). Hard to start cold. As it starts & runs fine when hot then it's more than likely the primer bulb or chokes are not working properly. Got back to the ramp and the idle was much better. Battery is new( AutoCraft M24-3 800 CCA) Bulb is firm, engine will crank for 5-10 seconds and battery will start to give out. Hard start but good on higher r. I therefore am trying to adjust the idle mixture screws to a proper setting. So much for facts, the difference isn't enough to make a jetting change. When did you first "Please help! I have a 2008 M "Please help! I have a 2008 Mercury 50 Hp 2 stroke. Our mercury 25hp has been cared for since new. Sep 1, 2023 · the first thing for me would be checking to make sure the choke is working. If it is shut off after running around the lake it will not start. In this blog post, we’ll explore common problems associated with Mercury 2-stroke outboard engines and provide detailed, step-by-step solutions for fixing them Jun 15, 2015 · Hey gang, This is the first 2 stroke carb'ed motor I have owned in a long time. ) I have seen many, many, posts from all kinds of folk suffering the same kind of problem on all makes and sizes of outboard engines. They shut down 2 cylinders at lower speeds. I've found with my Merc 90 ELPTO that over choking during cold conditions will flood the motor making a lot of smoke. Those motors (Depending on year) have always been hard to start when cold. The six steps outlined in this article are an excellent starting point to any beginner, and they will ensure that you can start your Mercury motor safely and effectively, therefore maximizing your boating experiences. (omc tohatsu )I need adjustment procedure for linkage. You also said you replace one of the deep cycle bateries with starting battery. I put some non ethanol 90 octane gas in and gave it a hard run down lake. I took that picture at a Whaler dealer; it was a customer's boat in for service. Weight 223 Lbs. All of you were very helpful the last time I posted my problem, and things I did had positive results, but it's a work in progress, so maybe someone can shed some light on this new issue. I have just bought a speed boat with a 90Hp 1989MY 6 Cylinder 2-Stroke. Jun 5, 2011 · My motor, a 1998 25 HP long shaft, pull start, 2 stroke Mercury tiller was starting hard and not idling well, and it seemed like it was not getting enough fuel. Smokes quite a bit after idling for 10 - 15 min, like if im trolling. May 29, 2020 · #fishingboat #boatmaintenance #boatrepair I have a Mercury two stroke outboard 3 cylinder, I'm only guessing but probably 1990 ish. jmarshall8 Cadet. Sep 7, 2002 · I have a Mercury 9. This video will show you how to disassemble, clean, rebuild, and reassemble a 1996 Mercury 90 HP 2 stroke outboard motor. The reed block's have no bearing on compression, the ports are above the reeds. I just Aug 4, 2013 · The reason this engine was so hard to start is that one stroke on the primer is too much gasoline. Some 75 and 90 HP triples have an inherent stumble as you describe but it should idle relatively smooth if the mixture screws are set properly. <br /><br />While your at it this winter replace the waterpump and tstat, then enjoy the motor all spring/summer/fall long. I used to run her dry. Before we start, how about learning about Mercruiser 4. It's a fuel problem. Mar 24, 2024 · Air/fuel mixture adjustments followed per the manual, the idle speed steps everything but I suspected maybe the timing…now it’s running rougher and I cannot find where the screw was in the beginning. <br /><br />It all that fails you can try what I did to mine. Just plugs. p. gaskets. Jul 31, 2022 · About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Nov 15, 2002 · My 90hp is not a piece of junk, she's just a little cold blooded sometimes. New impeller, new voltage regulator, new spark plugs, new fuel pump, fuel filter and lines with primer bulb fresh gas new carb. Apr 27, 2012 · Re: mercury tohatsu 30hp two stroke hard to start when cold Check plunger clean/dirt condition. Doesn't seem to fire up like it used to. May 30, 2023 · Mercury 2-stroke outboard motors are highly regarded in the boating world for their reliability, performance, and efficiency. Oct 26, 2008 · I have a new 90HP Mercury 2 stroke that I haven't found the right "trick" for starting for the first time of the day. So, keep reading. Cable Adjustment: If shifting difficulties are due to control cable tension or alignment issues, you may need to adjust the control cables. Pre-Starting Check List. everyone said that for the sister vehicle, the xr400, to turn the carb upside down and level the bowl as it turns out the float spec for the xr250 actually needs the float to allow more fuel into the bowl than that (south of level when turned upside down Jun 4, 2023 · Mercury Marine has been manufacturing outboard engines for more than 75 years. Once you get going faster, it seems to run okay, but seems to use more oil than it should. I had the same engine in a 2006 model so I know what the steering should feel like. The engine starts fine when cold (every time) with just a bit of choke. May 28, 2007 · Have 2002 90 hp merc injected 2nd owner , oil consumption is too high, i am past cert. I don't know if Mercury recommends this or not. Maybe a little less. Had to take plugs out and turn it over and clean it out. Jun 18, 2006 · I have a new 50 hp 2 stroke on my flats boat. My Mercury dealer verified the Hello everyone! I'm back again with another question about my '86 50hp 2-stroke Merc. Recalling my last Mar 15, 2005 · Re: hard starting 115hp mercury DocF76,<br /><br />The I-6's are known for hard starting when cold. So if I were to upgrade in power now Sep 10, 2008 · Re: 2002 Mercury 125 Hard to Start It is a fact the the Eastern sealevel is NOT the same as the Western sea level. Higher RPM it seems to run well, mild hesitation coming up on plane. I have a 2002 90HP 2-stroke Mecury Outboard that runs smooth after 2,300 RPM, but misses, smokes, idles rough to beat the band at idle and at trolling speeds. not anymore. Runs good. I found just pulling the primer out to the point where the red O-ring shows is plenty My 1995 90hp Mercury 3 cilinder has a rough idle. I would tend to listen to the Merc manual but the Seloc manual is mostly written from experience. Somethings not right. Been in an Optimax and a ProXS since then. If they were dripping when you were pumping the bulb and it never got hard then it's a float, needle and seat issue, not reeds. my problem is it is very hard to start when cold. That says weak battery. S. Jun 4, 2023 · Mercury Marine has been manufacturing outboard engines for more than 75 years. Last outing, it began losing one cylinder (loss of power), and would recover if we mashed on primer bulb constantly (got us home). It took about 1 1/2 hours of primer bulb squeezing, cranking with or without primer/choke and adjusting throttle unit a gentleman helping someone else suggested getting the motor as vertial as possible. The carb must be removed,dssassemble at the float,needle removed and cleaned (or replaced if bad),and the carb re-assembled. When cold, the engine will start on the first or second pull and run all day, as long as it is not turned off. Took it out and it was hard to start. My next boat will be a Boston Whaler. If you got a good solid shot your low speed jets were fine. The newer ones had enrichener valves rather than choke plates. Hi, this is a question about my 2003 Mercury 2-stroke (3cyl) 90 HP Saltwater Edition. like when it hasn't been started for a week or two. 9 kw) 80 (59. Seloc suggests all idle screws backed out 1-1/2 turns for initial start, and the Merc manual says 1-1/2 on #2 & #3 and 1 turn on #1. 1) It is hard to start but I put that down to the choke View online or download Mercury OptiMax 90 Outboard Motor Owner's Manual, Installation Manual Trim Tab Adjustment. -----Perhaps spray some mixed fuel into the carburetor as a test. So with a long primer (key pushed in), engine angle adjusted and almost full throttle it started. With Yamaha you can Hi everyone, Been real frustrated with getting my Mercury 9. Mixture is to rich at idle causing missing and hard starting. In most cases plunger sticks inside solenoid due to solenoid's bracket misalignment at base, check/correct misalignment, if ok, there are 2 small screws that holds solenoid to upper base, will need to play/adjust them properly untill plunger works Aug 19, 2018 · Re: Mercury 90-HP: Shearing Flywheel Key Post by dtmackey » Wed Aug 29, 2018 1:50 am There are performance products for 2 stroke motors called offset flywheel keys that offer up to 3 degrees of flywheel advance from a machined key that advances the flywheel 3 degrees ahead of the intended crank position. ? 1984-1995 Yamaha 90hp. I couldn't start her cold to save my life when I first got her. Aug 23, 2015 · Hi All. I bought the outboard new from West Marine in 2021 (). I don't recall the 3-cylinder Mercury outboards having a shut-off of one cylinder for idle operation. Mar 16, 2016 · Hi Guys, I have a 115 2+2 serial 0T133863 on a Nitro LX 700. Out of ideas. Each in and out motion shoots extra fuel into the engine. Looks like they were doing some engine work. Anyone have info on how to re-do the timing on a manual start 2 stroke motor as well as set the idle at correct rpm? I have a 90hp 2 stroke Mercury Outboard engine and I was going about 20mph in forward and needed to avoid an object in Feb 21, 2017 · Hard to start trick for my 2 cycle Johnson 90 HP - My motor has been hard to start in 2016 when cold. 1 kw) Idle RPM (in forward gear) 650 - 700 Full Throttle RPM Range 4750 - 5250 5000 - 5500 Piston Replacement 71. After that 2 cycle oil sprayed in the cylinders and cranked her around several times. My procedure: 1. I get conflicting instructions from Seloc and the merc manual. Do you have the mercury model 150xl 1980 Mercury 90hp 2-stroke: 1993 Mercury 90hp long shaft: 1995 Mercury 90ELPTO 90hp 1998 Mercury 90 hp two-stroke: 2000 Mercury-Mariner 90ELPTO: 2001 Mercury 90ELPTO 2-stroke: 2002 Mercury 90 hp 3-cylinder: 2004 Mercury 90 hp carbureted: 1996-1997 Mercury 90 ELPTO: 2007-2008 Mercury 90 20" shaft: 2002-2006 Mercury TwoStroke 90: 2009 Mercury 90 Apr 14, 2019 · Here is a seldom talked about solution to an outboard engine that is hard to start and idles poorly. After cleaning terminals contacts and ends, the engine still would not turn o Jun 9, 2020 · Short demo of a cold start showing each step and the right way to start up the old 2 stroke Evinrude V4 motor on my boat - might apply to Mercury, Johnson an Aug 17, 2009 · Re: How to adjust idle 150hp Basically is hard to start and when it does it stalls on low idle then you press the neutral to get some rpm's then it runs good on low idle until it shut's back down for 30 min or more. <br /><br />Second, the motor would run about 23 mph for the first 15-20 minutes then without me doing anything Hi everyone, I'm really reaching out with this post as I'm at a point with my 1988 Mercury 60HP 2 stroke (OB240262) whereby I feel I'm chasing my tail and every step I take seems to produce more questions than answers. jimh I pulled my 14' Smokercraft with 9. The routine in the manual isn't much help so I'm hoping some other owners of this engine might have some hints. Any ideas before I take her back to the Sep 8, 2008 · I have a 2000 mercury 40hp 2 stroke 2 cylinder electric start and power trim. # Last year I appended a couple of posts re my brand new Mercury 90-HP four-stroke that was hard to start, idled roughly (spitting/coughing/severe engine shake) and then died. Understand it has an automatic choke (I miss the toggle switch choke control on my old one). 2 kw) 75 (55. Aug 18, 2010 · Re: Mercury v175 black max hard to start I have a 1983 150 hp black max. Unless you are using a product such a Sea Foam (aerosol) which has oil included, you may be scuffing up your engine internally from running fuel without any lube. Jul 24, 2013 · Re: 1987 115 hp 2 stroke Mercury Outboard starting problem It's finally started , not sure what was wrong , I realized that spark plugs were dry , I was ready to remove the carbs and clean them , I was very upset and pumped the bulb really hard that I never do and then it started ! I think may be the carbs floats were stack Jul 7, 2023 · How to Adjust Mercury 75 hp 2 Stroke Carburetor? To adjust the mercury 75 hp 2-stroke carburetor, you need to divide the whole process into three parts. However, there has been a problem with the motor's gear shift from the first day. Then, take it out of gear (forget about tach setting in gear) and adjust idle timing screw in and out until it smooths out. Probably too many to mention. I rebuilt all four and tuned it using a mercury carb synchronizer ($40 - JC Whitney online). Put the plugs back in Holding the choke on with the 2 cylinder motor and not cranking does nothing. I have primed the bulb firm, used the choke and have to milk the throttle a little. Apr 2, 2012 · Re: Hard starting mercury outboard hot or cold assuming ur compression readings are correct they are too low for a 2 stroke motor the 10 psi variance is getting near enough to worry about but currently the difference isnt your concern low compression will make a motor hard to start as for the idling concern u have a fuel supply/delivery problem. I vagualy remember there is or was a stator issue with the 75 hp and or the 90 hp. I could be wrong. I have been May 27, 2012 · Re: Root cause of Mercury 2-strokes' rough idle Rough idle is a subjective statement. I am going to take extra fuel with me next time so that I can run it slap out. Idle speed at idle or in gear is right on, but, at times it will like take a sneeze and just die. . Is Mar 1, 2022 · If you use your 2-stroke engine for hours on end, especially in harsh conditions like dusty or wet areas, then you should check and replace them every six months. I changed the fuel line a couple weeks ago and I've had it out on the water probably 3x since then and it's been good. If not open up till you get one. Oct 16, 2016 · Motor is hard to start cold. Follow your outboard’s service manual or consult a professional for proper adjustment procedures. Check the operation of the choke solenoid. The 90 HP 4-stroke Mercury engine is one of the popular choices among boaters looking for an efficient, reliable, and powerful engine for their vessel. The engine has exactly 130# compression on all cylinders and runs the boat 48 GPS MPH at 5000 RPM with a 22 in Turbo 2 prop and idles smoothly, so I think it is a solid engine overall. 65 (67. Hard to start 2 + 2 Pump Primer Raise the fast idle lever (or press the Neutral button and move throttle arm past the shift and slightly into the throttle range) RICK: Is this what your Mercury 90-HP four-stroke looks like? How about you Yamaha owners. The Marine Mechanic I'm going to connect you with knows all the tricks and shortcuts. marine mechanic. 9 Merc 2-stroke out of the barn to run the engine for the first time this spring. 3 Carburetor Problem? Idle Speed Adjustment Mar 7, 2013 · 2005 Mercury 90 hp ELPTO Salt Water (Carbureted, 3 Cylinder, 2 Stroke) The symptom is exactly as you see/hear in this YouTube video (You will also note you tach behaving erratically or, dying. "If the engine is operated with the fuel supply shut off until it stops the fuel and oil mixture inside the engine is removed, leaving bearings, pistons, rings and other parts with little protective lubricant, during long periods of storage. Yesterday I started the motor for the first time in over 3 months and I had NO PROBLEM. LIke it was flooded or Jan 17, 2012 · Re: 2005 2 stroke Mercury Saltwater 150hp hard starting makes humming sound But you said it stops cranking after a bit and begins to hum. ) Trim as Scott mentioned 2. Dec 20, 2020 · About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Jul 7, 2013 · Re: 1989 Mercury 25 hp hard cold starting According to the owners manual for my 1990 25hp EH model,you rotate the choke knob fully clockwise,pull choke knob out to prime engine,push choke knob in and try to start. Oct 25, 2005 · Right out of the Mercury outboards repair/owners manual from 65-89 2-40hp motors. Oil pump is located under fuel pump on port side. My service manual instructs me to initially set these screws at the following setting. I want to install the Bob's Machine Shop Velocity stacks. if the ball pumps up hard then it isn't leaking air. Well, here's an update. Once started it runs fine up to full RPM without problem, but I usually have to do some combination of priming, popping the cover and holding the throttle open manually for a few pulls, burning incense for Buddha, etc to get it going. Reassembled, engine The 90-HP three-cylinder Mercury motor has all the characteristics of the classic carburetor two-cycle motor, both the good and the bad. Jan 21, 2014 · The more gas I ran out the worse it idled. I charged the battery and put her back to sleep for the summer. everyone said that for the sister vehicle, the xr400, to turn the carb upside down and level the bowl as it turns out the float spec for the xr250 actually needs the float to allow more fuel into the bowl than that (south of level when turned upside down Three years ago I purchased a new 170 MONTAUK with a Mercury 90-HP four-stroke outboard. I switched to the stage 1/2/3 mercury products. the key says push to choke. This keeps oil from puddling at the rear where the plugs are and aids in faster starts. Serial number - 0G405715 - I purchased this boat last year, always idled pretty rough. Help me, please. Aug 26, 2019 · 2 Stroke Outboard Motor Won't Start. Mar 24, 2014 · Re: 2000 90 hp 2 stroke won't start First off that is a 2 cycle engine requiring oil to be mixed with the fuel. 9 Four-Stroke 2003 model and it is hard to start. ejri ecffjh cpeztsl tpgtw aqsyz qvqhtg anbyj vkmzbn vdfj iknm ldinstd fbbouu qzfztbm rhxs tnqg