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funk-o-meter's avatar
funk-o-meter
Explorer
Sep 08, 2019

Yet another Onan running like **** thread. HELP!

Hi all! Short version first: 1999 Onan MicroLite 4k Been sitting for years new fuel pump new fuel filter new air filter oil change pulled and cleaned carb twice two bottles of Sea Foam ...
bounder39zman's avatar
bounder39zman
Explorer II
Sep 10, 2019
I have attempted to clean/rebuild dozens of these carbs, with mixed results. some work great...some never quite run right. But just in case you missed this, there is a soft metal seal ring INSIDE the bowl,
that seals the bowl to the venturi tube. It is easily lost when disassembling bowl from carb. it will run like **** without it.
It will overfuel badly. Otherwise, OP's suggestions to replace the carb probably only thing to do at this point.

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