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Rough Idle on Yammaer 90 HP 2-Stroke
Posted on 11/6/15 at 6:48 pm
Posted on 11/6/15 at 6:48 pm
Motor runs fine at WOT and at mid to low RPMs. However, sitting at idle it runs rouph. No miss-fire or anything just a very rough idle. I know 3-cylinder motors are usually a little rough at idle. Just seems a bit much, what are some things it could be?
1
Posted on 11/6/15 at 6:59 pm to GeauxTime9
Idle jet plugged in one of your carbs. Probably the bottom one.
Posted on 11/6/15 at 7:12 pm to Crocc
quote:
Idle jet plugged in one of your carbs. Probably the bottom one.
Don't think it is a carb issue, all 3 carbs were rebuilt recently.
Posted on 11/6/15 at 7:34 pm to GeauxTime9
Assuming it's not idled too low, crank it up on muffs and pull the plug wires off one at a time. The one that makes no difference is the problem cylinder. You can hold the wire close to plug and you'll here if it's firing. If it is, then it's the carb. Carbs. are tricky.
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