Yamaha 50 2-stroke idle/low
Hi!
I have a Yamaha 50 -91 DETOL 2-stroke, and for the past few months it's been running bad at idle, and sometimes knocks/jumps at medium speeds. At higher speeds it runs smoothly. At idle it runs OK for a little while, then it shudders/runs very bad for a few seconds and usually it stops there, sometimes it won't stop and the regular idle will return for awhle, until it starts shuddering again. At low/medium speeds it runs fine but sometimes it sounds like a cylinder would misfire/not fire at all once or twice and then run fine again. So far I've tried checking the sparks, changing the sparkplugs, checking the compression, cleaning the carburators and using a different fuelline + tank, but nothing has made any difference. Thank you very much for any ideas or advice you can give me! Best regards, Tom |
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