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12-07-2014, 09:52 AM
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#1 |
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Registered User
Join Date: Dec 2014
Location: Orillia ontario
Posts: 7
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1972 chev pick up starting problem
Hey guys new to this site so hopefully I'm gonna by about this the right way. I just picked up a 72 Chevy 4x4. I put a new fuel pump and fuel lines on it cause the pump was gone. The truck runs great but only if I dump gas down the carb to get it going. After i prime it the truck runs great and I can shut it down and fire it up a half hour later but if I wait a couple hours it has to be primed again. It's a 350 with a Qjet carb. The truck has also been sitting for ten years. Should I pull the carb and rebuild or just take it apart and clean it ? Still new to the world of wrenching so not to sure we're to start. Thanks in advance
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12-07-2014, 11:15 AM
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#2 |
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Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,723
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Re: 1972 chev pick up starting problem
Welcome to the money pit!!
Take some pics of your carb so we can see what you got. Do you have a working choke? Is your accelerator pump working? |
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12-07-2014, 11:45 AM
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#3 |
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Senior Member
 Join Date: Jun 2000
Location: alb, nm
Posts: 413
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Re: 1972 chev pick up starting problem
As gezzer said, check accelerator pump with engine off, of course. After engine has run, turn it off, look down barrel and move throttle linkage. Should see fuel squirting from side into throat.
If truck has been sitting 10 years, carb probably would benefit from cleaning and rebuild. |
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12-07-2014, 12:31 PM
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#4 |
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Registered User
Join Date: Dec 2014
Location: Orillia ontario
Posts: 7
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Re: 1972 chev pick up starting problem
Where is the accelerator pump? And I don't see any fluild squirting into the carb when I work the throttle at the carb.
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12-07-2014, 12:33 PM
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#5 |
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Registered User
Join Date: Dec 2014
Location: Orillia ontario
Posts: 7
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Re: 1972 chev pick up starting problem
Wouldn't let me post more than one pic at a time
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12-07-2014, 12:40 PM
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#6 | |
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Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,723
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Re: 1972 chev pick up starting problem
Quote:
Can you give us a closer shot of your second pic? |
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12-07-2014, 01:13 PM
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#7 |
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Registered User
Join Date: Dec 2014
Location: Orillia ontario
Posts: 7
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Re: 1972 chev pick up starting problem
I've located the accelerator pump it moves up and down but no fuel.
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12-07-2014, 01:14 PM
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#8 |
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Registered User
Join Date: Dec 2014
Location: Orillia ontario
Posts: 7
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Re: 1972 chev pick up starting problem
Still only one pic at a time for some reason
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12-07-2014, 01:42 PM
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#9 |
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Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,723
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Re: 1972 chev pick up starting problem
Carb rebuild or replacement time.
What's your budget like? Done a carb before? |
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12-07-2014, 02:02 PM
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#10 |
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Registered User
Join Date: Dec 2014
Location: Orillia ontario
Posts: 7
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Re: 1972 chev pick up starting problem
Money isn't a problem it's lack of knowledge. I thought about tossing the Qjet and buying another carb but I was told I'd get better gas mileage with the Qjet
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12-07-2014, 02:03 PM
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#11 |
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Registered User
Join Date: Dec 2014
Location: Orillia ontario
Posts: 7
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Re: 1972 chev pick up starting problem
And no I havnt rebuilt a carb the size before only on two strokes and small motors.
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12-07-2014, 02:39 PM
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#12 |
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Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,723
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Re: 1972 chev pick up starting problem
You can buy rebuilt carbs from several sources.
Here's a good one. https://www.smicarburetor.com/ Or keep it in the same country and contact this guy in Vancouver area. http://www.thecarburetorguy.com/ I've had quadrajets from both of them. If you want to tackle a rebuild then let us know. I've got links out the wahzoo For that! LOL!! |
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