Onan 5500 Backfires and Dies under a load

185EZ wrote:

lakecityemt wrote:
For the past year I have been searching for answers and replacing parts with no improvement.

What year is this toyhauler?
Did it run right the previous year?
Have you checked that it has proper gas flow from the tank?
Have you tried loosening gas cap while running?

2013
Been trying to fix since it acted up 3 years ago... Dad visits once a year and tries to fix it while here...
New fuel pump and we are not running from the tank, directly from a fresh gas can below the generator.

Spark arrester removed and now it runs under a load.