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Re: [GMCnet] Onan - Vapor Lock? [message #178482 is a reply to message #178473]

Mon, 30 July 2012 22:30

USAussie

Messages: 15912
Registered: July 2007
Location: Sydney, Australia

Karma:

Senior Member

Jack,

JimB plumbed a $45 Facet pump in between the AUX tank and the Selector valve, when I switch to AUX it comes on and feeds the
mechanical pump with 1 - 4 psi.

When I am in a vapor lock "environment" I switch to AUX before it occurs and so far it has worked perfectly.

The down side is that if you have a mechanical fuel pump with a weak diaphragm it could rupture and the Facet pump could fill the
crankcase with gas.

So far so good!

Gene Fisher has cited a couple (or was it three) of engines that were killed by a defective fuel pump that got moved from engine to
engine.

Regards,
Rob M.

-----Original Message-----
From: Jack Christensen

My experience is that when it's hot outside, first the Onan shuts down due to (it would appear) vapor lock. A short time later the
coach has vapor lock. I've gone to intank fuel pumps for the coach, but not for the Onan. So far I don't have enough experience
with the intanks to state that my vapor lock problems are a thing of the past.
--
Jack

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Regards, Rob M. (USAussie) The Pedantic Mechanic Sydney, Australia '75 Avion - AUS - The Blue Streak TZE365V100428 '75 Avion - USA - Double Trouble TZE365V100426

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[Message index]

		[GMCnet] Onan - Vapor Lock? By: USAussie on Mon, 30 July 2012 20:04
		Re: [GMCnet] Onan - Vapor Lock? By: armandminnie on Mon, 30 July 2012 20:35
		Re: [GMCnet] Onan - Vapor Lock? By: USAussie on Mon, 30 July 2012 21:06
		Re: [GMCnet] Onan - Vapor Lock? By: ljdavick on Mon, 30 July 2012 20:42
		Re: [GMCnet] Onan - Vapor Lock? By: USAussie on Mon, 30 July 2012 21:09
		Re: [GMCnet] Onan - Vapor Lock? By: Matt Colie on Tue, 31 July 2012 07:43
		Re: [GMCnet] Onan - Vapor Lock? By: ljdavick on Tue, 31 July 2012 11:35
		Re: [GMCnet] Onan - Vapor Lock? By: hal kading on Tue, 31 July 2012 11:56
		Re: [GMCnet] Onan - Vapor Lock? By: USAussie on Tue, 31 July 2012 19:41
		Re: [GMCnet] Onan - Vapor Lock? By: Mr ERFisher on Wed, 01 August 2012 08:25
		Re: [GMCnet] Onan - Vapor Lock? By: USAussie on Sun, 05 August 2012 15:15
		Re: [GMCnet] Onan - Vapor Lock? By: Ken Burton on Sun, 05 August 2012 16:03
		Re: [GMCnet] Onan - Vapor Lock? By: USAussie on Sun, 05 August 2012 16:21
		Re: [GMCnet] Onan - Vapor Lock? By: Carl S. on Sun, 05 August 2012 20:37
		Re: [GMCnet] Onan - Vapor Lock? By: Ken Burton on Sun, 05 August 2012 22:39
		Re: [GMCnet] Onan - Vapor Lock? By: USAussie on Mon, 06 August 2012 09:57
		Re: [GMCnet] Onan - Vapor Lock? By: USAussie on Wed, 08 August 2012 23:13
		Re: [GMCnet] Onan - Vapor Lock? By: ljdavick on Thu, 09 August 2012 01:07
		Re: [GMCnet] Onan - Vapor Lock? By: Ken Burton on Thu, 09 August 2012 02:03
		Re: [GMCnet] Onan - Vapor Lock? By: Dennis sch on Mon, 30 July 2012 20:51
		Re: [GMCnet] Onan - Vapor Lock? By: Carl S. on Mon, 30 July 2012 22:54
		Re: [GMCnet] Onan - Vapor Lock? By: k2gkk on Mon, 30 July 2012 21:49
		Re: [GMCnet] Onan - Vapor Lock? By: USAussie on Mon, 30 July 2012 22:32
		Re: [GMCnet] Onan - Vapor Lock? By: Ken Burton on Mon, 30 July 2012 23:49
		Re: [GMCnet] Onan - Vapor Lock? By: captjack on Mon, 30 July 2012 21:54
		Re: [GMCnet] Onan - Vapor Lock? By: USAussie on Mon, 30 July 2012 22:30
		Re: [GMCnet] Onan - Vapor Lock? By: midlf on Tue, 31 July 2012 13:19
		Re: [GMCnet] Onan - Vapor Lock? By: USAussie on Tue, 31 July 2012 19:30
		Re: [GMCnet] Onan - Vapor Lock? By: midlf on Tue, 31 July 2012 22:19
		Re: [GMCnet] Onan - Vapor Lock? By: USAussie on Tue, 31 July 2012 22:42
		Re: [GMCnet] Onan - Vapor Lock? By: k2gkk on Tue, 31 July 2012 22:55
		Re: [GMCnet] Onan - Vapor Lock? By: USAussie on Tue, 31 July 2012 23:26
		Re: [GMCnet] Onan - Vapor Lock? By: ljdavick on Wed, 01 August 2012 00:43
		Re: [GMCnet] Onan - Vapor Lock? By: USAussie on Wed, 01 August 2012 00:56
		Re: [GMCnet] Onan - Vapor Lock? By: Ken Burton on Wed, 01 August 2012 01:28
		Re: [GMCnet] Onan - Vapor Lock? By: Steven Ferguson on Wed, 01 August 2012 06:33

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