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    1999 Force/Merc 75HP 3 Cylinder 2-Stoke Rough Running Issues

    Been struggling for over 6 months working to troubleshoot fuel/idle issues with my 75HP outboard. All started when boat started to stall out when getting to dock in reverse and then, hard to start and dying out sometimes getting on plane. Fast forward to now I have exhausted my knowledge and...
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    1999 75hp Fuel Prime Issue

    Thanks for the reply. I have already replaced the fuel pump with a new one 1/2 into the job. How do I set the fuel mixture screws? Is there a standard I need to set these for this motor? I have been looking about the internet and not found any instructions for this motor. Regards,
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    1999 75hp Fuel Prime Issue

    Today I reset the sync and link and the idle seems much better. However after all the work I have done, I still have the same darn issue where the boat runs and seems to starve from fuel and crap out. Looking at the fuel filter (which is mercury brand) when idling it seems to empty out most of...
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    1999 75hp Fuel Prime Issue

    I finally got around to rebuilding the carbs and giving them a good clean. So far engine appears to be running better in that it did not stall out in idle. However, it seems to now be running hi RPM at idle. I read to loosen the sync & link clamp screws, let it re-set closed and then tighten...
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    1999 75hp Fuel Prime Issue

    Okay that is very helpful information which rules one thing out. When the engine is not on the bulb appears to stay hard after I prime it. I noticed that while it was running the fuel filter appears to slowly drain out (or just have less in it) when idling. When I rev it it seems to fill up a...
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    1999 75hp Fuel Prime Issue

    I worked on the motor some more today and ran compression tests. All three cylinders are sitting at 120 foot lbs give or take a pound or two. Since compression looks good I went around and looked at everything. Boat starts fine when cold, it won't idle long in driveway. When I first...
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    1999 75hp Fuel Prime Issue

    I took it in for a few things but for the fuel issues he fixed a stuck float, re-worked a kinked fuel line, fixed a cracked t-fitting, tighten a leaking carb bowl, checked one bowl and it was clean, adjusted sync and link and found a cracked plug wire and covered it with silicon since he did not...
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    1999 75hp Fuel Prime Issue

    Continued saga. I took boat to mechanic twice. First visit said bottom carb float was stuck and a crack in a T-fitting. Second visit said spark plug wire that was arching and my top carb bowl was leaking. I have replaced everything from the fuel tank pickup to the fuel pump (put in a new...
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    1999 75hp Fuel Prime Issue

    Have a 1999 Force/Mercury 75hp 2-stroke 3 cyclinder andhaving an odd fuel issue. prime up bold and it is hard, motor starts fine but will eventually stall out and bog down from fuel starvation. Primer bulb goes soft and if you prime it up, starts but eventually dies and can‘t get give it any...
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    75HP Force/Mercury 2-Stroke Stalls at Odd Times

    So the motor acts like it is flooded, then clears out and runs good? Yes this what it appears. Good point about the fuel pump as I did not even think about that. Should I replace the entire pump or is the diaphram easy?
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    1999 75HP Force/Mercury Odd Lower Unit Oil Residue

    Thanks for the reply. No the boat has been sitting for about a month and was not run before draining the fluid. I do have some sort of fuel leak near the carbs and when I pull the boat out of the water I notice that a little bit of fuel is running down the side of the motor under the cowl...
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    75HP Force/Mercury 2-Stroke Stalls at Odd Times

    I have a 1999 75Hp Mercury/Force 3cyclinder outboard 2-stroke which is having a few stalling issues. Boat cranks up and runs fine off the dock. After fishing for awhile, I crank the motor and then when I put it into gear its lagging, has trouble taking throttle and dies out. I then have to...
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    1999 75HP Force/Mercury Odd Lower Unit Oil Residue

    I have a 1999 75HP Force outboard which is really a Mercury. I drained the lower unit oil and found a weird golden color sheen that rose to the top of the pan which drizzle out and stayed on top. The bulk of the oil is dark blue/black but this golden stuff appeared to mixed in which is very...
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    1999 75HP Mercury Slowly Lose Top End RPM

    Over the past two years my top end RPMs have gone from the norm of 5000 rpm at WOT to now sitting around 4500 rpm WOT. I have had the compression checked, tuned the motor, had a de-carb treatment, adjusted the sync and link and changed the primer bulb. At WOT the boat runs fine but it almost...
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    1999 75 Force/Mercury Stalls in Gear Only After Sitting

    I have 1999 Force/Mercury (really a Mercury motor) that stalls after putting in gear when the boat sits for a while after fishing. I can start the motor fine when cold, rev and then drive. But after I sit for a while if I start the motor it idles fine but when I put into gear it starts to move...
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