Quadrajet Problem Solving > Diagnose a Quadrajet carburetor problem

Choke Pulloff Not Letting Air Valves Open, Suspect Too Much Vacuum

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Cliff Ruggles:
It could be fuel delivery related.  A boat doesn't accelerate really fast like a vehicle so less tendencies for fuel delivery issues with a mechanical pump, plus in most cases the fuel tank is ahead of the engine not 14' or so behind it!

We use the high flow Marine N/S assemblies in all Marine rebuilds so plenty for what you are doing......Cliff

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