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Posted by: brian minson Nov 14 2021, 11:28 AM

I have been playing with my carbs all weekend and can't seem to get them dialed in.

Engine: 76 2.0 with hydraulic lifters dual Weber IDF's, 009 with Empi electronic ignition - stock rebuild about 5k miles ago.

When cruising at 3600-4000 rpm in 4th at about 65-70 car just loves it. Coming to a stoplight and downshifting once I get below 3k RPM I start to get pops and bangs.

This is a sign of TOO LEAN correct? Could it be my idle jets are dirty? OR?

Brian

Posted by: rcrgyrl Nov 14 2021, 12:36 PM

I would check your idle jets it could definitely be that they are dirty. I just had a similar issue and that was the culprit.

Posted by: Shivers Nov 14 2021, 12:46 PM

Exhaust leak can cause popping

Posted by: SirAndy Nov 14 2021, 02:12 PM

QUOTE(Shivers @ Nov 14 2021, 10:46 AM)

Posted by: Rand Nov 14 2021, 03:27 PM

The old saying, popping out the back = rich, popping up the front = lean.

Exhaust leak for sure makes pops... Oh man, had a box van that ran awesome but scared the shit out of you every time letting off the gas at speed. BOOM Boom. Made everyone duck. Had to slip it into neutral before decel until the new exhaust.

Posted by: brian minson Nov 14 2021, 04:48 PM

Well CRAP!!! Found a missing exhaust stud....

Brian