Quadrajet Problem Solving > Diagnose a Quadrajet carburetor problem

Marine Quadrajet Issue - Will not idle when hot

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Cliff Ruggles:
We've seen a lot of fuel pumps that are putting out too much pressure and causing issues.

We tested the carb on our test engine with 6psi fuel pressure and no issues anyplace.....Cliff

rudie20:
Thanks all.  You were right! :D Fuel pump was the issue. Overpressurizing fuel system at idle.

77cruiser:
What was the pressure?

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