Quote:
Originally Posted by metoo21
So if the valves don't cause gas fumes in the exhaust (out of spec causing blow-by and incomplete combustion), then what could be the issue?
|
I didn’t see what year or carburetor or fuel injection. If carburetor I would be my N0 1 suspect after I checked spark plug, while I had spark plug out I would just replace it. Carburetor models will eventually run rich and puff black smoke due to improper fuel air mixture. Fuel injection hardly ever.