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Re: [GMCnet] Onan - Vapor Lock? [message #178564 is a reply to message #178444] Tue, 31 July 2012 13:19 Go to previous messageGo to previous message
midlf is currently offline  midlf   United States
Messages: 2212
Registered: July 2007
Location: SE Wisc. (Palmyra)
Karma:
Senior Member
Robert Mueller wrote on Mon, 30 July 2012 20:04

G’day,

<SNIP>

I removed the solenoid at the inlet to the pump as I reckoned it was one thing less to fail.

I installed a Pertronics mod a couple of years ago and a new Onan coil.

I really think this is a vapor lock problem - it was 97° in Carlsberg, NM today,

Oh yeah, I did check the fuel level in both tanks and both above 1/2.

As they say in this neck of the woods - any ideas?

Regards,



Re the solenoid valve: Someone (Dan?) had removed the Onan fuel shutoff solenoid valve and then had a problem when the fuel tank pressurized and overwhelmed the needle valve on the Onan. Therefore I plan on leaving mine installed.

Re Onan vapor lock problem: If I encounter this, or maybe before, I will mount the Onan fuel pump at the same level as the bottom of the tank. That way the only low pressure section of the Onan fuel supply system will be from the surface of the gas in the tank up to the top of the tank. Once the system is primed the pump inlet would even have a slight positive static pressure.



Steve Southworth
1974 Glacier TZE064V100150 (for workin on)
1975 Transmode TZE365V100394 (parts & spares)
Palmyra WI
 
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