My Onan Model 5.5HGJAB-1038C Seem to be getting too much gasoline. IT is running rough and smokung (black smoke). when I pinch the fuel lane the motor starts ruuning like it should until it runs out of gas
Electrical Supplies - Watts - Onan Portable Generator - 5000 , Model# 6500
Answers & Comments
Your generator should have automatic choke, vacuum operated.
Check whether the vacuum pipe (if any) is not stuck or loose.