I have a 235 with a 2x1 Offenhauser manifold and and Fenton headers. I
finally replaced my warped and leaking carbs with a pair of rebuilt
Rochesters. Following the tech article on the Inliners site, I added
insulators at the same time.
The truck idles fine. however, when I took it out for a drive, I was
getting rapid backfiring on foot off throttle deceleration. This got worse
the longer I drove. Based on my limited knowledge, this would indicate a
lean burn condition, right? I checked the carbs and they have 52 main jets
in them. Based on the Inliners article, I wouldn't think that the jets are
too small. Or could they be? Could this condition be caused by an air
leak? If so, I would assume that at idle there isn't enough air being
pulled into the system to cause a problem. If this is true, then under
acceleration the fuel compensates for the leak. Does this sound right?
What else would I have missed?
Tony D.
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
|