White smoke comes out as I'm trying to startonan 4bge generator and when it does start it surges and the smoke is black!!?. Created by cherokee239. Electrical Supplies - Watts - Onan Portable Generator - 4000 , Model# 5500

White smoke comes out as I'm trying to startonan 4bge generator and when it does start it surges and the smoke is black!!?

December 2020 1 10 Report

White smoke comes out as I'm trying to startonan 4bge generator and when it does start it surges and the smoke is black!!?

Electrical Supplies - Watts - Onan Portable Generator - 4000 , Model# 5500

Answers & Comments

Fred Yearian

The black smoke means it is running rich... Some have had float bowl flooding due to dirt in the fuel that sticks the float needle open overfilling the bowl. Their usual fix is to clean the bowl and the carb and the fuel line.

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