Fumes without Smoking

[greggeo]

I have a Slant 6 runs well.. does not Smoke.. However there is annoying exhaust fumes for cars that follow or even if you sit still after a while. Is this Typical of the older Technology or is there a problem with my Carb adjustment ? Any thoughts are appreciated
thanks,
GG

[Bubb]

Sounds like your carb is running "rich". One way to tell is to pull your spark plugs and check them out. If they are black, you are too rich. If they are white, too lean. If they are light brown, just right. I still have fumes from my exhaust, but I think I have leaks too.

[greggeo]

Thank you Bubb I will check that out..