Quadrajet Problem Solving > Diagnose a Quadrajet carburetor problem

failed emissions High CO

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Cliff Ruggles:
Did you install one of our N/S assemblies?  The motorhome carbs require the high float N/S assembly, and I'd upgrade the accl pump while you are in there.  Set the float at the correct level, and should be good to go.....Cliff

zacman:
I did install new needle and seat, it was a little different with a window in it.  I changed the spring and rubber gasket on accl pump.  Changed the float as well, but when I set it to the specs on the sheet the carb was smelling of gas bad so I lowered it.  When I measured the factory one it was at 22/32.  not sure what I set it at now.  What level should it be set at?  and would that cause the vapor lock/running out of fuel? 

Cliff Ruggles:
So you didn't use the correct N/S assembly or put a good pump in it.  To get the fuel level correct, you must use the correct high flow N/S assembly, new float, and I'd put one of our complete accl pump assemblies in it while you are in there.

Set the float to the correct factory setting if everything is stock on the engine and it still has a stock fuel pump on it.....Cliff

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