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12-26-2016, 06:55 PM | #1 |
Registered User
Join Date: Dec 2016
Location: Riverside California
Posts: 8
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1972 c10 1/2 ton fuel problems
I have a 1972 chevy pickup. Still running the original motor and trans. I have replaced my electric fuel pump and sending unit 2 times. My issue is the carb is not receiving fuel from the pump but I also disconnected the in line to the fuel pump and turn the truck on and still no fuel coming from the line itself. So I can't figure out why the line isn't getting fuel in the first place. I checked the fuse area that runs to the fuel pump and it has good power, even replaced the wire to be sure there were no breaks in it. Any ideas or anybody who has had this problem?
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12-26-2016, 07:01 PM | #2 |
Registered User
Join Date: Dec 2016
Location: Riverside California
Posts: 8
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72 Chevy pickup 1/2 ton fuel problems
I have a 1972 chevy pickup. Still running the original motor and trans. I have replaced my electric fuel pump and sending unit 2 times. My issue is the carb is not receiving fuel from the pump but I also disconnected the in line to the fuel pump and turn the truck on and still no fuel coming from the line itself. So I can't figure out why the line isn't getting fuel in the first place. I checked the fuse area that runs to the fuel pump and it has good power, even replaced the wire to be sure there were no breaks in it. Any ideas or anybody who has had this problem?
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12-26-2016, 07:52 PM | #3 |
Senior Member
Join Date: Jan 2016
Location: massachusetts
Posts: 329
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Re: 1972 c10 1/2 ton fuel problems
Is the fuel pump in the tank or on the frame? 12 volts to pump and good ground at the pump should make it run. If the pump is frame mounted and running, how far from tank--should be close to tank--fuel line or pick up tube clear? Good luck!
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12-26-2016, 08:09 PM | #4 |
Registered User
Join Date: Dec 2015
Location: Newark ,Delaware
Posts: 158
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Re: 72 Chevy pickup 1/2 ton fuel problems
Electric fuel pump? Was this an add on pump? Instead of mechanical pump on engine?
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12-26-2016, 09:30 PM | #5 |
The Older Generation
Join Date: Aug 2006
Location: Montezuma, Iowa
Posts: 25,773
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Re: 1972 c10 1/2 ton fuel problems
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Can you hear the electric pump running? Does that particular pump need to be primed? If the answer to those two questions is "yes" and "no" the fuel line itself must be plugged. Remove the gas cap then remove the hose from the electric pump inlet and blow air backwards through the line. You should only need about 10 or 15 pounds of pressure..... See if that opens it up. LockDoc
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Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 - |
04-20-2017, 04:01 AM | #6 |
Registered User
Join Date: Dec 2016
Location: Riverside California
Posts: 8
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Re: 1972 c10 1/2 ton fuel problems
Clearly late update ran into bigger issues, but the simple problem was a blown fuse in a hidden relay.
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04-20-2017, 11:07 PM | #7 | |
The Older Generation
Join Date: Aug 2006
Location: Montezuma, Iowa
Posts: 25,773
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Re: 1972 c10 1/2 ton fuel problems
Quote:
LockDooc
__________________
Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 - |
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04-20-2017, 11:56 PM | #8 |
Moderator
Join Date: May 2007
Location: Southern Cal
Posts: 20,031
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Re: 1972 c10 1/2 ton fuel problems
Any pics of your 72? I live in Riverside also.
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1972 C/10 Cheyenne Super SWB. Restored, loaded, slammed. 1968 C/10 50th Anniversary LWB. Unrestored, stock, daily driver/work truck. RIP ElJay RIP 67ChevyRedneck RIP Grumpy Old Man RIP FleetsidePaul |
04-21-2017, 01:15 AM | #9 |
Registered User
Join Date: Dec 2009
Location: El Dorado Ca
Posts: 3,374
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Re: 1972 c10 1/2 ton fuel problems
thanks for the update.
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