- Joined
- Feb 23, 2022
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- 52
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- 28
- Location
- Fort Myers, FL
- First Name
- Steve
- Truck Year
- 1981
- Truck Model
- K20
- Engine Size
- 350
I wonder if you can use the tank switch and have two pumps, It works on the ground side
Truck left me stranded today.
- Thread starter sgrinavi
- Start date
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AuroraGirl
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- Sep 8, 2019
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- Location
- Northern Wisconsin
- First Name
- Taylor
- Truck Year
- 1978, 1980
- Truck Model
- K10, K25
- Engine Size
- 400(?), 350
not without being way more complicated or causing paradoxically more fuel vapor issues.
- Joined
- Feb 23, 2022
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- 52
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- 28
- Location
- Fort Myers, FL
- First Name
- Steve
- Truck Year
- 1981
- Truck Model
- K20
- Engine Size
- 350
On a related note, my fuel tank switching valve died, AGAIN. Third time is a charm.
This time I decided to see if I could figure out what was up. For some reason there was only 5.5 volts being delivered to the switch. I chased the line back to the bulkhead and checked the voltage there. Still 5.5. I did the right thing and ran a new wire off a different circuit, now I get 12 volts to the switching valve, still no-workie though. I'll replace it this weekend and see.
The good news is that my fuel gauge is now reading correctly. Woot.
This time I decided to see if I could figure out what was up. For some reason there was only 5.5 volts being delivered to the switch. I chased the line back to the bulkhead and checked the voltage there. Still 5.5. I did the right thing and ran a new wire off a different circuit, now I get 12 volts to the switching valve, still no-workie though. I'll replace it this weekend and see.
The good news is that my fuel gauge is now reading correctly. Woot.
AuroraGirl
Full Access Member
- Joined
- Sep 8, 2019
- Posts
- 9,228
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- 6,209
- Location
- Northern Wisconsin
- First Name
- Taylor
- Truck Year
- 1978, 1980
- Truck Model
- K10, K25
- Engine Size
- 400(?), 350
If the solenoid wasnt switching with proper voltage it probably was why it died
They also dont last long unless you had a 1980-1982ish with a delay module that doesnt cycle the solenoid literally everytime the key goes off to on, crank to run, etc (Much less actuations)
- Joined
- Feb 23, 2022
- Posts
- 52
- Reaction score
- 28
- Location
- Fort Myers, FL
- First Name
- Steve
- Truck Year
- 1981
- Truck Model
- K20
- Engine Size
- 350
That's what I figured, it would explain my gauge issue too.
- Joined
- Feb 23, 2022
- Posts
- 52
- Reaction score
- 28
- Location
- Fort Myers, FL
- First Name
- Steve
- Truck Year
- 1981
- Truck Model
- K20
- Engine Size
- 350
Changed the fuel pump and carb today, she's running pretty good right now.
I have an acquaintance that works on high end euro classics, old Ferraris, etc. He highly recommended the Facet fuel pump. It does run good, solid 5 lbs of pressure and keeps that filter full. Went with a Holley Street Warrior carb. Truck is running really good, way stronger than it was on the quadra jet.
I have an acquaintance that works on high end euro classics, old Ferraris, etc. He highly recommended the Facet fuel pump. It does run good, solid 5 lbs of pressure and keeps that filter full. Went with a Holley Street Warrior carb. Truck is running really good, way stronger than it was on the quadra jet.
