Re: ques about plug chop
im running a DeNardis motor, boyesen reeds, and an iridium spark plug
fuel mix is at the recommended 40:1 with Yamaha 2-stroke oil
ive idle jetted down 5-sizes and its still black
how can I tell the difference from excess oil in the fuel ratio, or a cold plug, or a rich carb?
...motor wont start without choke but starts right up with it