CARBURETOR DATED

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Ricko1966

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kansas
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Rick
Truck Year
1975
Truck Model
c20
Engine Size
350
Got you the name and number.
 

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Robert Bare

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Location
MT
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Robert
Truck Year
1978
Truck Model
k20
Engine Size
5.7
No, drainback or siphoning does not drain the carb.
What it can do is empty the fuel lines from the carb back to the tank. The carb can evaporate dry fast, even in a few hours. Most common causes of siphoning- weak pump valves, or worn, or dirt, and a bad fuel cap.
 

3 Ton

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Oct 14, 2024
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Location
Pacific Northwet
First Name
Fred
Truck Year
1978-79 78 body, 79 gearing
Truck Model
K-15 Suburban
Engine Size
350
Can't happen in 1406 so irrelevant.
BS
That chinese carp has no check valve. Only Rochester's came with check valve fuel filters.

I can show you a dozen 1400 Chinabrocks that all leak down. We install bass check valves in them. The check valves wear out in 4-5 years and you have to replace them.
BTW did you know Chinabrock discontinued the 1400 series? NO Parts, no more, and AFB parts do not fit.

The fuel pump check valves are known to blow out due to FOD (foreign object damage).
Now and Then in Maine sell rebuild kits for all AMERCIAN made fuel pumps.

DO NOT put an eclectic fuel pump on a carbed engine. The machinal stock fuel pump will run everything short of dual quads.
 

Ricko1966

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Apr 11, 2017
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Location
kansas
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Rick
Truck Year
1975
Truck Model
c20
Engine Size
350
BS
That chinese carp has no check valve. Only Rochester's came with check valve fuel filters.

I can show you a dozen 1400 Chinabrocks that all leak down. We install bass check valves in them. The check valves wear out in 4-5 years and you have to replace them.
BTW did you know Chinabrock discontinued the 1400 series? NO Parts, no more, and AFB parts do not fit.

The fuel pump check valves are known to blow out due to FOD (foreign object damage).
Now and Then in Maine sell rebuild kits for all AMERCIAN made fuel pumps.

DO NOT put an eclectic fuel pump on a carbed engine. The machinal stock fuel pump will run everything short of dual quads.
I agree,I prefer a mechanical pump and have always told everyone that's what to run,and they will run 2x4s or 3x2s,But try buying one today,that has correct fuel pressure and is assembled correctly,it is more likely you will get a bad one than a good one..
 

boloboss

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May 6, 2023
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Location
Houston Texas
First Name
Shuntel
Truck Year
1984
Truck Model
Chevy C10
Engine Size
v8 350 5.7 liz6er
Did they make a mechanical three-line fuel pump
 

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