1997 Suzuki 55 chirping and stumbling under load

jimbo5670

Recruit
Joined
Aug 7, 2009
Messages
1
hi guys, glad i found this forum, this problem is driving me crazy

whenever i take my boat out, it starts up just fine, and runs fine at low rpm (like 2000 and below or so) and for the first few minutes (like 5-10) it has all of its usual power (i can go WOT, 1/2, etc). After that it makes loud chirping under more than 1/5 load, and will stumble and chirp like crazy until it almost dies or i throttle back. full throttle might net 2200 rpm

I had a mechanic look at it, he cleaned the carbs, chucked on a water separator, etc, and recommended i replace the thermostat, so i did, same problem.

the overheat buzzer has also not come on

is this a lean chirp, or something else, because it only happens when the engine is heated, or is this some oil sensor issue, if so can i disconnect it to stop limp and premix? or something else?

Thanks in advance,
Matt
 
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