Quadrajet Problem Solving > Diagnose a Quadrajet carburetor problem
1977 Qjet coughs and sputters
blazer74:
Cliff has them. Bet it's been modified.
Cliff Ruggles:
Yes, we stock the good ones with a straight inlet so they are easy to modify....
stushug:
I purchased one of your pulloffs, installed it today and didn't notice any difference. With the car at full throttle, it keeps stuttering and backfiring. If I back off the throttle just a touch, the car accelerates much better.
Cliff Ruggles:
Do you have a restriction someplace in the exhaust system?
Your problem sounds fundamental and may not be related to the carburetor provided you have done a complete/correct rebuild with good parts and correct settings......Cliff
stushug:
Cliff,
The carb was just rebuilt by me after purchasing one of your SR kits about three weeks ago, then I changed the pulloff on Sunday, on your recommendation. The engine is a rebuild with about 3K miles on it, and the dual exhaust, from manifolds to tailpipe was installed right after the rebuild. There are definitely no restrictions there. I will go over everything again, but I have checked fuel pressure, vacuum lines, exhaust and engine timing multiple times. I'm running out of ideas. I appreciate your suggestions and will follow up. Thanks.
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