General Category > Quadrajet Carb Talk and Tips

Rochester q-jet marine carb.

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Mike29:
Cliff if you read this I bought 2 kits from you to overhaul my marine Q-jets a few months back. They are the 17082403's and just wanted to say engines started right up after a small prime and actually idled nice. A friend who supposedly "knows" these marine carbs helped and he recommended I set floats at 1/8". Boat runs smooth but seems to be running a little rich to me ....could this be due to float setting? What would you recommend I set them at? Those kits are great by the way...

Cliff Ruggles:
Marine carburetors will have very specific float settings per application.  Some will be listed quite low due to the mounting angle, etc.

Most carb numbers show up in the instructions, I would set the floats at the factory recommended setting.  If no listing is found, I most often set them at 1/4".  Marine applications are sensitive to high fuel levels, and fuel slosh, etc, and running a 1/8" setting may produce running rich and even stalling issues in actual use......Cliff

Mike29:
Thanks Cliff.

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