sbc 350 rapid backfire
molhannah
03-07-2005, 08:30 PM
This is a 1977 Chevy p/u 350 with quadrajet that has a rapid backfire thru the carb when it accelarates. It idles fine, but when it revs it pops. Any advise greatly appreciated. :banghead:
Twitch1
03-08-2005, 11:45 AM
Check timing 1st.
molhannah
03-08-2005, 12:02 PM
that's the first thing I did. It doesn't matter where the dist. is positioned it still does it.
molhannah
03-15-2005, 11:39 AM
update; found the problem; it was in the carb, the plunger with the two metering jets was frozen, did a rebuild and all problems cured.
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