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#1 |
Registered User
Join Date: Aug 2009
Location: Denver, CO
Posts: 291
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Fuel Tank Valve Question
My '72 has two fuel tanks. The side saddle was installed by the PO and previously used an electronic valve. The valve has since been removed and the side tank taken out of service. From what I can tell, only the tank in the cab has a return line.
I want to put the second tank back in service but I am not sure if I need a valve that allows for return fuel or not. I am guessing that the PO just burned the main tank first, then switched to the side saddle, then back to the main to burn up the remaining fuel that was returned. Would this one work? http://www.tomsbroncoparts.com/product.php?id=1411 Any thoughts and recommendations are always welcome.
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__________________________________________ Sean 1972 C20 2005 4Runner ![]() |
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#2 |
Active Member
![]() Join Date: Jul 2007
Location: Centrally located between Houston, Austin and Waco. BCS area.
Posts: 7,947
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Re: Fuel Tank Valve Question
I'm not very familiar with the two tank operation other than what I've seen on my BIL's truck. He used the secondary tank as a backup but about once ever few months or so, he would use the secondary tank just to keep the gas from getting stale.
IIRC he had a solenoid operated valve that would shut the supply from one tank and open the other. Not sure what you mean by return line but his was factory installed an worked real well. That valve you're looking at could do the trick. It's similar operation as the one he had. |
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#3 |
Registered User
Join Date: Mar 2007
Location: San Pedro River, SE Arizona
Posts: 734
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Re: Fuel Tank Valve Question
I've had two and even three tanks on some of these trucks and they all have/had the manually operated valve on the floor to the left of the driver seat, with a handle opposite the four position pointer. It merely swivels in a circle. One opening is the outlet and others for inlet. If you have that type of valve, just run a fuel line from the second tank to one of the unused inlets - the one you will remember as the setting for that tank. Might be a really good idea to make certain that the tank is clear of debris/gunk before you begin using it again.
One thing I have found to be handy is to have a sender on each tank and a switch on the dash which enables one to see the fuel level in each tank - because I do not drive some of these very often and forget the fuel level in the tank that does not have a gauge. Sometimes I just run the un-gauged tank until it is almost empty (first sputter) and then turn the valve handle to the gauged tank.
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CCCC 67 Sting Ray Coupe 327 4sp; 68 K10 Suburban 327 4sp; 69 K20 Lifted 383 4sp; 69 C80 Fire Truck 478 V6 5sp/2sp; 69 C20 Longhorn 327 4sp; 70 C30 Wrecker 350 4sp; 70 C30 Flat Bed 350 4sp; 71 C20 LWB 350 4sp; 72 K5 Blazer 350 4sp; 72 C30 Flat Bed Gooseneck Hauler with sleeper 350/TH400; 72 C20 Longhorn 402 4sp; 52 Mack LTL Supercharged Cummins 5sp x 3sp; 01 Dodge 5.9 HO Cummins 6spd; 02 Safari Trek 2430 8.1 Vortec on Workhorse Chassis; 03 Silverado 2500 HD 4wd Duramax/Allison Moved but still in the family 70 C20 Custom Camper 350/TH350; 72 K5 Blazer CST Highlander 350/TH350 Recently sent to new homes 72 C30 MoHome 402 4sp; 72 K5 Blazer Conv 350 4sp; 75 GMC 6000 Aerial 350 w Allison; 72 GMC 3500 Utility 350 4sp; 70 GMC 3500, 350 4sp |
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