Quadrajet Problem Solving > Diagnose a Quadrajet carburetor problem

Serious stumbling from off idle through cruise. Runs like a champ at WOT. ??

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Jeffs68:
The fuel does have an easy path back out of the carb if there is no filter in the inlet. Some have a check valve built into the filter. Also, and don't quote me on your specific carb, but the fuel inlet needle can either be hooked on the float arm or not, if it is not it may help with fuel drain back by keeping the fuel inlet seat sealed.

bigoilman:
Thanks, Jeff.  Needle is attached to the float arm.  It was before, too.   Should it not be?

Jeffs68:
Cliff has said he prefers it not to be. I have it attached on 2 carbs with no issues, but it may be something to try. But I would recommend getting his SR rebuild kit, it has VERY high quality parts including a new needle and seat for the fuel inlet.

Cliff Ruggles:
The HD/Motorhome carburetors are very specific, and take different gaskets than any other carburetors.

I would install one of our kits, and I'm betting your issues will go away.  Very little in the over the counter kits will be correct or work well in one of those carburetors.....Cliff

bigoilman:
Thanks, Cliff.  Didn't realize they were "oddball" carbs.  I'll order a kit.  I've got the book.

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