Dual tank solenoid valve

[tophat36]

Just for your info,(thats not smartass) lierally just so you know,a lot of these trucks won't start on residual fuel in the system. Pages and pages and thread after thread of my truck won't start if I park it for 30 minutes,overnight,1 week,1 month.

No I def appreciate it, a lot of this stuff appears simple but can be really complicated for these trucks for certain things and not like modern vehicles. I’ve been really lucky with this truck starting right up. When it’s been sitting overnight I have to push and release the gas pedal and then press the brake and it starts right up. Any additional starting the same day just starts immediately without doing the pedal sequence. Only time I have issues is after I’ve driven around for 15-30 min and I stop for an errand and get in the truck to leave and it will stall when I restart it, but then it’s fine. Not sure if that’s an issue but generally I’m relieved I haven’t had too much trouble thus far.

 

[tophat36]

If you can bend lines, can make the hard lines real nice as well. I got a selector valve from Napa for my 77, its a single terminal unit with 3 ports, 2 to the tanks and 1 up to the pump.

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Are you saying that having the bed out of the way makes doing the hardlines easier? Did you swap that valve for the 6 port?

 

[gilby959798]

Are you saying that having the bed out of the way makes doing the hardlines easier? Did you swap that valve for the 6 port?

No, but I am restoring my truck so I went ahead and made all new stainless lines, plus showing how I ran them. I only have a 3 port.

 

[legopnuematic]

doesnt it get stuck, leading to filling up tank without someone knowing lol

So my 76 is a single wire 3 port valve, no fuel return, just feed and vapor line from the charcoal canister (those are just tee’d to each tank).

My fun learning experience was the truck has had some ‘electrical alterations’ in the prior ownership, one of them was the power feed to the switch was redone with a blade fuse inline with spade terminals. I didn’t realize what that was feeding at the time, so I just removed it at some point because I thought it wasn’t needed. (The 76 had a lot of extra electrical stuff when I got it, aftermarket cruise that didn’t work, electronic brake controller that didn’t work, am/fm/8track/cb radio that didn’t work, aftermarket wiper delay that didn’t work).

So I continue driving the truck and then it doesn’t really want to start and stay running… hmm, how can that be, says I have 3/4 of a tank. I after too long switched tanks and the needle went below E. Then the purpose of the mystery blue wire made sense. Reapplied power to the switch and guess what, it ran again.

 

[Grit dog]

No I def appreciate it, a lot of this stuff appears simple but can be really complicated for these trucks for certain things and not like modern vehicles. I’ve been really lucky with this truck starting right up. When it’s been sitting overnight I have to push and release the gas pedal and then press the brake and it starts right up. Any additional starting the same day just starts immediately without doing the pedal sequence. Only time I have issues is after I’ve driven around for 15-30 min and I stop for an errand and get in the truck to leave and it will stall when I restart it, but then it’s fine. Not sure if that’s an issue but generally I’m relieved I haven’t had too much trouble thus far.

Pressing the brake does nothing to help it start. Fwiw
Also don’t confuse being your new at this with being more complicated.
I can think of none to maybe a few minor things that are more complicated on a pre computer vehicle than they are on a newer vehicle.
Also learning what is an issue and what is normal or maybe just a little quirk is helpful.
Like your scenarios above for starting the truck.
You should have to press the gas pedal once when the engine is cold for it to start quicker or possibly at all. Accel pump squirts a shot of fuel and the choke sets. Totally normal.
Choking out or cranking a bit longer when engine is warm, doesn’t happen on a factory perfect carbed vehicle. But it’s only a minor quirk. Both the 77 and 86 do it once in a while albeit slightly different behavior. Problem? Nope. But to be somewhat expected with an aftermarket carb, no fuel return and 50 year old technology.
Tryin to help you not focus on things that may not be significant issues or issues at all.
Not all of us have the memory of how these cars ran back in the day and how/why they operate like they do.

 

[tophat36]

Pressing the brake does nothing to help it start. Fwiw
Also don’t confuse being your new at this with being more complicated.
I can think of none to maybe a few minor things that are more complicated on a pre computer vehicle than they are on a newer vehicle.
Also learning what is an issue and what is normal or maybe just a little quirk is helpful.
Like your scenarios above for starting the truck.
You should have to press the gas pedal once when the engine is cold for it to start quicker or possibly at all. Accel pump squirts a shot of fuel and the choke sets. Totally normal.
Choking out or cranking a bit longer when engine is warm, doesn’t happen on a factory perfect carbed vehicle. But it’s only a minor quirk. Both the 77 and 86 do it once in a while albeit slightly different behavior. Problem? Nope. But to be somewhat expected with an aftermarket carb, no fuel return and 50 year old technology.
Tryin to help you not focus on things that may not be significant issues or issues at all.
Not all of us have the memory of how these cars ran back in the day and how/why they operate like they do.

That all makes sense, thank you for giving me some perspective. I guess when I say more complicated I mean these trucks have quirks and seem to have personalities kinda lol. I did try the start up with just pressing the gas pedal and no brake. Worked the same like you said! I think maybe when I was trying different methods having your foot on the brake when you start up feels normal to me. But cool to know I don’t have to do it, thank you!

 

[tophat36]

No, but I am restoring my truck so I went ahead and made all new stainless lines, plus showing how I ran them. I only have a 3 port.

Gotcha, yeah the lines looked really clean. Nice job!

 

[Grit dog]

That all makes sense, thank you for giving me some perspective. I guess when I say more complicated I mean these trucks have quirks and seem to have personalities kinda lol. I did try the start up with just pressing the gas pedal and no brake. Worked the same like you said! I think maybe when I was trying different methods having your foot on the brake when you start up feels normal to me. But cool to know I don’t have to do it, thank you!

Push brake to start nonsense didn’t start until, idk, this century sometime I’d estimate.

 

[AuroraGirl]

Push brake to start nonsense didn’t start until, idk, this century sometime I’d estimate.

Even BTSI (brake to shift interlock) came around 1991
My oldsmobile 88 (1990) would let me shift without pressing the brake, wasnt a safety issue for me but i did like the the ability to just slip into reverse without hitting brake, but it makes sense to restrict the shift out of park with a brake press for kids and people who are less aware of things.

The press brake to start pisses me off, has no basis for necessity...

 

[tophat36]

Push brake to start nonsense didn’t start until, idk, this century sometime I’d estimate.

I also learned to drive stick before automatic and that’s what I drove for my first 10 years of driving. That could also be part of it feeling more normal to me.

 

[AuroraGirl]

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