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73-87 Chevy _ GMC Trucks => 73-87 Chevy & GMC Trucks => Topic started by: blueboy86 on March 22, 2015, 08:25:08 pm

Title: 86 Silverado duel tank problems
Post by: blueboy86 on March 22, 2015, 08:25:08 pm

My 86 has duel tanks, right now the fuel selector valve is bypassed and the right tank is removed. I don't drive it very often so i dont care about having two tanks. I would like to know how much gas I have though. Can I hook up the fuel sector valve and only run the fuel hoses from the left tank? And leave the other ports open/ capped off? Is the any other solutions? Anything would help. Thanks. - blueboy

Title: Re: 86 Silverado duel tank problems
Post by: zieg85 on March 22, 2015, 09:55:16 pm

If the switch is good and still wired and switched to the existing tank there should be no reason the fuel gauge shouldn't read

Title: Re: 86 Silverado duel tank problems
Post by: blueboy86 on March 22, 2015, 10:26:19 pm

Well right now the selector valve is not hooked up. So there is no connection between the sending unit and fuel gauge.

Title: Re: 86 Silverado duel tank problems
Post by: Irish_Alley on March 23, 2015, 01:06:14 pm

these electric fuel pumps or what?

Title: Re: 86 Silverado duel tank problems
Post by: blueboy86 on March 23, 2015, 05:22:33 pm

It has a single external fuel pump. Its a 2 barrel carb. The smog bull crap has been unhooked (for the most part). From the left tank I have three fuel hoses. Supply, return, and vapor. Vapor is the only one attached to the charcoal canister.

Title: Re: 86 Silverado duel tank problems
Post by: Irish_Alley on March 23, 2015, 06:10:52 pm

are the wires still ran to the fuel tank selector switch under the bed?

Title: Re: 86 Silverado duel tank problems
Post by: blueboy86 on March 23, 2015, 07:39:50 pm

Yes all the wires are ran to the connector. I have a brand new fuel selector valve in the box. Like I said the valve is bypassed. So the wires are disconnected under the bed.

Title: Re: 86 Silverado duel tank problems
Post by: blueboy86 on March 23, 2015, 07:49:14 pm

So basically this is my thinking. I cap off the ports for the right tank on the selector valve. Hook up the fuel lines for the left tank and mount the valve under the bed. And obviously keep the switch on the left tank. This way my gas gauge works and I can still put the other tank in when I want.

Title: Re: 86 Silverado duel tank problems
Post by: zieg85 on March 23, 2015, 07:50:53 pm

Quote from: blueboy86 on March 23, 2015, 07:49:14 pm

So basically this is my thinking. I cap off the ports for the right tank on the selector valve. Hook up the fuel lines for the left tank and mount the valve under the bed. And obviously keep the switch on the left tank. This way my gas gauge works and I can still put the other tank in when I want.

Perfect solution IMO

Title: Re: 86 Silverado duel tank problems
Post by: blueboy86 on March 23, 2015, 07:53:58 pm

Thanks. I just didn't know if that work work lol.

Title: Re: 86 Silverado duel tank problems
Post by: Irish_Alley on March 24, 2015, 06:38:39 pm

if your not planing on using dual tanks i would leave the fuel lines alone and figure out which wire go to the gauge (should only be one wire on + ground the sending unit) then figure out what wire goes to the gauge and make a good connection and be done. i wouldnt worry about rigging up a selector valve if youre not using dual tanks. just one more thing to go wrong

Title: Re: 86 Silverado duel tank problems
Post by: VileZambonie on March 24, 2015, 06:46:56 pm

Just pop the pink wire with the rubber cap off and move it directly to the good tank sending unit. You can simply bypass the valve altogether as it can easily fail on you in the condition you have left it.

BTW it's dual tanks not duel tanks. This is what duel tanks look like

Title: Re: 86 Silverado duel tank problems
Post by: bens85c10 on March 24, 2015, 08:09:05 pm

Lmao

Title: Re: 86 Silverado duel tank problems
Post by: timthescarrd on March 24, 2015, 08:53:16 pm

Vile, wouldn't that be dual duel tanks? :)

Title: Re: 86 Silverado duel tank problems
Post by: VileZambonie on March 25, 2015, 08:01:38 pm

dual dueling tanks  ;D

Title: Re: 86 Silverado duel tank problems
Post by: blueboy86 on March 29, 2015, 07:28:45 pm

Irish alley... Like I said I plan on installing the second tank in the future. That's why I wanted to keep the valve. And vile...please explain how the valve can "easily fail on me in the condition I left it."
Anyways I hooked it up today and it works. No leaks, switch works, gas guage works, truck runs perfect.