Dual Tank Switch Issue

[Kasey 1977 K10]

Hoping I can find some expertise. I have a 77 K10 and am installing the Sniper EFI. In my previous setup I didn't have fuel return lines which I had to add for the EFI. I had to change out the valve to the 6 port valve to support return lines to each of the tanks. The switch will change the tank once but wont change it back. I'm wondering if I need to also replace the switch to work with the new valve? Or are there any other suggestions? I have tried two brand new valves to try and eliminate a bad valve out of the box. Any help or suggestions would be greatly appreciated!

 

[Kasey 1977 K10]

I should have mentioned that both tanks were working great prior to changing the selector valve to the OEM 6 port valve.

 

[bucket]

Is your new valve the solenoid type with the single wire? Or the later one with several wires?

 

[Kasey 1977 K10]

Is your new valve the solenoid type with the single wire? Or the later one with several wires?

It is the OEM single wire variety.

 

[bucket]

May I ask where you bought one?

They are very simple how they operate. In stock form, they self-return to the passenger side tank. When you hit the switch to the left tank, it sends 12 volts to the valve and it switches to the left tank. When you switch back to the right tank, it just removes the power and it switches back.

The valve is self-grounding, I'd make sure the frame is good and clean where the valve mounts up.

 

[Kasey 1977 K10]

May I ask where you bought one?

They are very simple how they operate. In stock form, they self-return to the passenger side tank. When you hit the switch to the left tank, it sends 12 volts to the valve and it switches to the left tank. When you switch back to the right tank, it just removes the power and it switches back.

The valve is self-grounding, I'd make sure the frame is good and clean where the valve mounts up.

I had a local truck mechanic shop order one for me. I'll have to ask where he got it. I pulled off the original 3 port valve, cleaned the area and lightly sanded and put the new one back in its place.

 

[bucket]

With the ignition on, you can flip the switch back and forth, to hear the valve click each time it switches.

Where is your electric fuel pump mounted?

 

[Kasey 1977 K10]

With the ignition on, you can flip the switch back and forth, to hear the valve click each time it switches.

Where is your electric fuel pump mounted?

Unfortunately, it doesn't switch back. It is located close to and forward to the selector valve.

 

[bucket]

Disconnect the switch wire at the valve and put a test light on it. Make sure it applies power and removes it when you operate the switch.

 

[Kasey 1977 K10]

Disconnect the switch wire at the valve and put a test light on it. Make sure it applies power and removes it when you operate the switch.

Thank you. I'll give that a try.

 

[Kasey 1977 K10]

The single wire valve the mechanic got me was not new and was faulty. I created a new post since I'm unable to find a good single wire 6 port valve. Below is the link. I've searched for days trying to find one and have run out of options unless someone on this forum has one for sale? I'm probably going to try pick n pull but not sure which years/models of trucks to target for my search. Any ideas?

http://www.gmsquarebody.com/threads/fuel-selector-valve-1-wire-6-wire.22000/unread

 

[idahovette]

Kasey I have a 6 port single wire valve that I just pulled off of my 75 K-20. Not an original 2 tank pickup but I did test it and it does work. Where are you in Oregon? I am on the Idaho -Oregon border at Weiser Idaho 83672 about 16 miles from Ontario Oregon 97914

 

[Kasey 1977 K10]

Kasey I have a 6 port single wire valve that I just pulled off of my 75 K-20. Not an original 2 tank pickup but I did test it and it does work. Where are you in Oregon? I am on the Idaho -Oregon border at Weiser Idaho 83672 about 16 miles from Ontario Oregon 97914

If you are willing to part with it I'm willing to buy it. How much do you want and I can tack on shipping and a convenience fee. I can prepay via paypal or bank to bank transfer???

 

[idahovette]

I have no idea what it's worth . Give me a call 208-549-1303

 

[idahovette]

Kasey e-mail me [email protected]