Generator quits after 2 min!
Could use some help as I'm stumped now. I have an Onan Marquis 5500 model# HGJAB-901D First, the genset wouldn't run and I figured out it was the fuel pump- replaced that. I've tried cleaning it ...
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dougrainer wrote:smithrock wrote:dougrainer wrote:smithrock wrote:
Oil is good, altitude is good. Just ran it without the fuel cap- it hiccuped at about 2 min then ran fine. Went to put a load on it-run A/C and it dies. It can't handle a load.
Never had an issue with this generator until now it sat for about 4 months without running. I'm thinking carb issue but not understanding why it would hunt and die when putting a load on it?:?
Because you do NOT understand the APU carb system:B. When you apply a load, you have to increase the fuel supply thru those jet holes. If any of those holes are clogged or restricted you will get hunting/surging and what you are experiancing. Doug
Ok, thank you for explaining to me! Makes sense :). I'll see if I can have it cleaned properly.
I did adjust the spring in the slots down a couple from where it was stock- it's been running for 20 min with a load on it with minimal hunting :h. Could that make a difference?
DO NOT DO THAT. Some Increase the speed and they think it is fixed. The Onan (your model) is designed to operate at 1800 rpm. The purpose of the spring(governor control) is to KEEP the Onan at 1800 RPM's regardless of load. You can make the Onan run smoother by jacking with the speed, but it will NOT put out the correct voltage/Hertz. Doug
10-4. I guess I'll take the carb off and have it cleaned out properly. Do you think the accelerator pump could be an issue?
