Hello everyone, I'm looking for some help on my Mercury outboard. Its a year 2000 2-stroke, 90 hp mounted on a 2000, fiberglass starcraft 1700 bowrider. I bought this set up used and do not know all to much about its maintenace history, but it does appear very clean and un-messed around with.
Anyways, the problem is that the idle is very rough and when I go to accelerate for the first time after leaving the dock it gians RPM and then stalls quickly and thens comes back and runs fine. Or it will just have a very hard time accelerating and then after a couple seconds smooths out and runs great above 1200 rpm.
Each time I attempt to fix the problem it gets slightly better then progressivly gets worse again. My first attempt was to bring it to a local outboard service tech and have it gone over when I first bought the boat. He changed the gear oil, adjusted the carbs, and de-carbed the engine. When I got it back it ran slightly better than before but then got worse again after a couple weeks.
So then I adjusted the carbs and the idle smoothed out slightly again, and then got worse again. So then today I noticed that the primer bulb would not stay hard. So i changed the fuel line and bulb and now it stays hard but the motor does not run any better.
I'm proficient in automotive repairs but this is the first outboard I've owned.
So any ideas on were to start with this problem would be appriciated. Thanks for the help,
Collin
Anyways, the problem is that the idle is very rough and when I go to accelerate for the first time after leaving the dock it gians RPM and then stalls quickly and thens comes back and runs fine. Or it will just have a very hard time accelerating and then after a couple seconds smooths out and runs great above 1200 rpm.
Each time I attempt to fix the problem it gets slightly better then progressivly gets worse again. My first attempt was to bring it to a local outboard service tech and have it gone over when I first bought the boat. He changed the gear oil, adjusted the carbs, and de-carbed the engine. When I got it back it ran slightly better than before but then got worse again after a couple weeks.
So then I adjusted the carbs and the idle smoothed out slightly again, and then got worse again. So then today I noticed that the primer bulb would not stay hard. So i changed the fuel line and bulb and now it stays hard but the motor does not run any better.
I'm proficient in automotive repairs but this is the first outboard I've owned.
So any ideas on were to start with this problem would be appriciated. Thanks for the help,
Collin