GMCforum
For enthusiast of the Classic GMC Motorhome built from 1973 to 1978. A web-based mirror of the GMCnet mailing list.
Home » Public Forums » GMCnet » Who loves and understands their Original Onan ?
Re: Who loves and understands their Original Onan ? [message #371309 is a reply to message #358781] Thu, 04 May 2023 10:23 Go to previous messageGo to previous message
rgogan is currently offline  rgogan   United States
Messages: 82
Registered: February 2004
Location: Milwaukee, WI
Karma:
Member
Just had my Facet Onan 6 KW fuel pump fail on a trip to Florida.
On arriving home I tore the fuel pump apart to determine the cause of the failure. Thought for sure it would be a burned out coil because there was an open circuit on ohm testing the pump. The coil was fine. It measured 1.6 ohms.
Found the points bathed in Argon in the upper portion of the pump that interrupts the power to the coil on upwards piston excursion had burned out. Totally blackened.

Others have talked about heat vapor locking the pump and causing it to fail. However with fuel fairly rapidly moving through the pump, the coil and points should stay adequately cooled.
Have any others had a similar pump failure? These Facet pumps are usually very reliable and are used in a variety of airplanes but usually not mounted so close to the engine heat as in our Onan's.
The pumps are getting expensive in the 119 to 139 dollar range and I would like to have a longer lasting solution with no vapor lock problems.

Also had problems with the Bovie Petronix ignition failing. My first install resulted in the magnetic coming off the flywheel despite JB weld attachment.
The reapplication held up until this last trip when I had to switch back to my points. Still have to check the flywheel to see if the magnetic fell off again.

Report message to a moderator

[Message index]
 
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Previous Topic: Is My Tranny Shot
Next Topic: FRig Fire protection
Goto Forum:
  


Current Time: Fri Jun 28 12:45:17 CDT 2024

Total time taken to generate the page: 0.00828 seconds
.:: Contact :: Home ::.

Powered by: FUDforum 3.1.1.
Copyright ©2001-2021 FUDforum Bulletin Board Software