Quote:
Originally Posted by steve25
Reving a motor up even 8000 rpm out of gear and non loaded will not produce the combustion temps that take place when running down the road under load, so your lack of smoke in the garage test makes sence.
If its a rich running carb issue when letting off the throttle then the carb would be running rich also at other times and you would smell that, but that being said, if you rub your finger around in the end of the tail pipe is it a grayish dry black that gets on your finger, or is it a oily black on your finger?
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Steve
It is a grayish dry black- what does that mean?