Hi guys: I have a 13 year old motorhome with 16000 miles on it with a Onan 5500 generator (only 116 hours). Everything worked great when i camped 4 months ago. But now Generator starts and runs about 1 minute then shuts down. It flashes a code 37 but i don't know what that means. If I give it a shot of starting fluid when it starts to stumble it will continue to run as long as I keep doing it. Anyone have a similar problem or advice? I am a driveway mechanic kind of guy that can fix most things but I have ZERO experiance with generators! Thanks for listening.