Quadrajet Problem Solving > Diagnose a Quadrajet carburetor problem

17057253 Rochester question main body air bleeds

(1/3) > >>

Mr.Pontiac:
On my second carb. Rebuild and found that the air bleeds are so small, I am seeing .028. Your book calls for .070 a huge increase. Why are the air bleeds so small from factory.? Referring on page 32 in your book.

Cliff Ruggles:
The Oldsmobile carbs from that period used a smaller indirect MAB in the main casting.

If you are rebuilding it for a stock application it should be left at the stock size......

Mr.Pontiac:
Explain MAB Please

Kenth:
Smaller Main Air Bleeds equals more fuel thru the circuit.
Most M-style Olds units uses small lower Main Air Bleeds and thicker (leaner) primary rods to match.

Mr.Pontiac:
Thank you for that great explanation.

Navigation

[0] Message Index

[#] Next page