View Full Version : b90 90 hp force

07-01-2009, 12:16 AM
"I have a 90hp force w/ sigle exaust on a '18 Bayliner. It tops out at about 25 mph and takes forever to get there. I just had my carbs cleaned, prop rebuilt, and replaced plugs. all 3 cylinders have 110#. It starts great and idles well but only feels like it has half power. Somebody please help."

07-01-2009, 08:32 AM
"sounds like a dead hole. Tried a timing light on them all yet?

Do you have one running cold compared to the others(don't get to close to the ignition).

Get a spray bottle with some mixed fuel and spray each carb while running -If you get a response, it's time to do the carbs."

07-02-2009, 12:12 AM
my mechanic checked the timing and said everything was good.

also one thing I've noticed is when my trim is all the way down it runs even worse. My trim has to be all the way up to even get to 25mph.

also when I give throttle to take off my motor almost backfires. It pops then goes. Then feels like it never goes past half throttle.