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Another Fuel Line/Selector Valve Question [message #286123]

Sat, 29 August 2015 21:34

Jerry Sitzlar

Messages: 206
Registered: February 2013
Location: Lenoir City, TN

Karma: 4

Senior Member

OK, I'm getting ready to replace my fuel lines. After crawling underneath to pre inspect everything I discovered my selector valve is missing. The fuel lines are teed together. My dash switch seems to work, at least the guage always show both tanks drawing down with the Aux tank emptying faster. I will be replacing my senders also. Should I leave the tee or install a new selector valve?

Thanks,
Jerry

Jerry Sitzlar..... 77 Eleganza II, Twin bed, dry bath...... Lenoir City, TN (near Knoxville)

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Re: Another Fuel Line/Selector Valve Question [message #286127 is a reply to message #286123]

Sat, 29 August 2015 22:22

Matt Colie

Messages: 8547
Registered: March 2007
Location: S.E. Michigan

Karma: 7

Senior Member

Jerry,

You can't leave the T and have fuel inventory management at all. The hydraulics of such a system do not mean that you will always draw from the most full tank. You easy solution is the replace the selector valve which may be a PITA as all the replacements are configured upside down and backwards.

Matt

sitzwaffen wrote on Sat, 29 August 2015 22:34

OK, I'm getting ready to replace my fuel lines. After crawling underneath to pre inspect everything I discovered my selector valve is missing. The fuel lines are teed together. My dash switch seems to work, at least the guage always show both tanks drawing down with the Aux tank emptying faster. I will be replacing my senders also. Should I leave the tee or install a new selector valve?

Thanks,
Jerry

Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit

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Re: Another Fuel Line/Selector Valve Question [message #286128 is a reply to message #286123]

Sat, 29 August 2015 22:24

Hal StClair

Messages: 971
Registered: March 2013
Location: Rio Rancho NM

Karma: -12

Senior Member

As both tanks are tied together, you'll only have fuel until the main tank runs out. You won't ever be able to draw down the aux tank below about two thirds empty. You will have about 40 gallons total usable capacity( to empty) vs the 50 in theory you should have. If you never run your main tank to empty you'll be fine. Replacing the switch over valve isn't a big deal though and the ability to use the extra fuel you're already hauling around anyway makes sense to me.
Hal

"I enjoy talking to you. Your mind appeals to me. It resembles my own mind, except you happen to be insane." 1977 Royale 101348, 1977 Royale 101586, Diesel powered, 1974 Eagle Bus 45',w/slideout, Rio Rancho, NM

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Re: Another Fuel Line/Selector Valve Question [message #286129 is a reply to message #286123]

Sat, 29 August 2015 22:28

Jerry Sitzlar

Messages: 206
Registered: February 2013
Location: Lenoir City, TN

Karma: 4

Senior Member

Thanks guys, that's the answer I was looking for since I had already purchased the valve.

Jerry

Jerry Sitzlar..... 77 Eleganza II, Twin bed, dry bath...... Lenoir City, TN (near Knoxville)

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