General Category > Quadrajet Carb Talk and Tips

Oldsmobile Torronado '73 455, idling,air trouble!

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Cliff Ruggles:
Keep the original carburetor.

Completely/correctly rebuild it with good parts.

This includes pulling the idle tubes from the casting and cleaning in and under them.  Our HP kits come with new tubes.

Install all the new parts, and set the float.

Once running and fully warmed up, set the idle mixture screws for best idle quality. 

If the engine is "stock", the stock carb will have plenty of idle fuel via the mixture screws.

Full throttle power problems are usually caused by using a small fuel inlet seat, and not replacing the secondary plastic cam/spring during the "rebuild".......Cliff

pauliq:
Thanks for the commend and tips omaha and Chris

Well.....I found out whats the problem with fulltrottle....I'm missing a part, thats the part that lifts the second metering rods, the part thats on the air valve shaft in the middle andpushes the metering rods up, for full power.

I'm affraid this must have happend when I took it to the company for Ultrasonic cleaning :(

Is this by any chanse a part thats in the HP kit?

By the way...the engine is stock...

An other question is I red about the tubes and that they have to be drilled in some ocasions, for some recipies out your book,  when I want the carb to be just stock, do I have to do that allso, or is the HP set for mine type carb for stock uses ready to build of the box?.....pauli

omaha:
yeah that part is in the kit. (the plastic cam on the airvalve shaft) should always be replaced during a rebuild as the tend to get brittle after time.

pauliq:
Thanks Omaha

I'm ordering a HP carb kit right now...and also a bushing kit......and ofcourse a copy of his book, and then rebuild it propperly like Cliff suggested. ;)

Can't wait to start.....Pauli

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