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#1 |
Registered User
Join Date: Jul 2012
Location: florence az
Posts: 6
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First off i am not a mechanic but am fairly handy. anyway i bought a 69 gmc as a project and have been slowly working on it. previous owner was a mechanic who said engine was rebuilt and running great (now highly doubting that) finally ready to drive and when i get on the road it runs great till it gets hot then starts to sputter almost like it is not getting gas and will eventually die. if i pull over and let sit after about 5 to 10 min it will restart and drive until too hot and does it again. i have now replaced the fuel filter, distributor, fuel lines from carb (real close to block thought it was vapor lock) just ran again today and still doing it! help i am about to scap it and do something else!
Rob (frustrated novice) |
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#2 |
It'll Buff Out!
![]() Join Date: Apr 2007
Location: San Diego
Posts: 603
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Re: 69 gmc sputters and dies when hot
Where is your fuel filter, before the pump or after?
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"Instructions are just another mans opinion" Become a Supporting Member http://67-72chevytrucks.com/vboard/payments.php Man Card Rules http://67-72chevytrucks.com/vboard/s...d.php?t=634550 72 Chevy Cheyenne Super 400 LWB |
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#3 |
Registered User
Join Date: Jul 2012
Location: florence az
Posts: 6
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Re: 69 gmc sputters and dies when hot
after. had someone tell me it could be the starter selinoid but tired of spending money to just find out it is wrong.
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#4 |
It'll Buff Out!
![]() Join Date: Apr 2007
Location: San Diego
Posts: 603
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Re: 69 gmc sputters and dies when hot
There's a similar thread right now about the same problem, do you get the whoosh if you pull the gas cap off after it dies?
Posted via Mobile Device
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"Instructions are just another mans opinion" Become a Supporting Member http://67-72chevytrucks.com/vboard/payments.php Man Card Rules http://67-72chevytrucks.com/vboard/s...d.php?t=634550 72 Chevy Cheyenne Super 400 LWB |
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#5 |
Registered User
Join Date: Jul 2012
Location: florence az
Posts: 6
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Re: 69 gmc sputters and dies when hot
ya i saw that but no. have driven with cap on and off with same result. my truck also has same carb but has the spacers so i know its not that.
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#6 |
Registered User
Join Date: Jul 2012
Location: florence az
Posts: 6
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Re: 69 gmc sputters and dies when hot
fyi has all new plugs and wires. dont know enough to do a full tune up. is it time to hire a mechanic?
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#7 |
Moderator
![]() Join Date: May 2007
Location: Southern Cal
Posts: 20,005
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Re: 69 gmc sputters and dies when hot
Since you live in a scorching climate, this may be your problem: http://67-72chevytrucks.com/vboard/s...d.php?t=516736
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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 |
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#8 |
Registered User
Join Date: Jul 2012
Location: florence az
Posts: 6
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Re: 69 gmc sputters and dies when hot
ok read your link and going to put a phenolic spacer on it. It is for a 4 barrel edelbrock so the question is 1" or 2" and what is the difference.
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#9 |
Registered User
Join Date: Aug 2010
Location: Des Moines, IA
Posts: 1,241
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Re: 69 gmc sputters and dies when hot
Mine had the same problem. I put on an aluminum intake and rerouted the fuel line away from the upper radiator hose and have since not had a problem. I also used intake gaskets with cross over block offs built in to reduce heat to the intake. I did not use a phenolic spacer but I also have a Holley so it may react different.
IMO I would think a 1" would be fine. The taller they are the more of a tunnel ram effect they give but it doesn't benefit a mild engine. Don't give up on it. It is how one learns to do things. Post some pics of your truck.
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Bud |
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