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#1 |
Registered User
Join Date: Aug 2004
Location: san marcos,tx
Posts: 266
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I am stumped, need help
ok heres the problem, my truck stumbles while accelerating, pops through the carb untill it warms up and desiels really bad after being turned off.(sometimes up to 2, 3 mins) its a 72 gmc with a 402, hei and 750 manual choke eldebrock carb.
i have tried to adjust the timing and the carb. several times and several differnt ways. same problem. also i have checked for vacuum leaks but cant find any. all the vacuum lines are new. the carb has been rebuild, new plugs and wires put in like 3 months ago. dont know what else to look for or do. please help. its my daily driver.
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72 GMC sierra 3/4 ton 402 bb ![]() 68 GMC 3/4 ton ![]() 2010 camaro rs: daily driver |
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#2 |
Msgt USAF Ret
![]() ![]() Join Date: Jan 2005
Location: Kalamazoo, Michigan
Posts: 8,714
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carb problems
here's one thread that talks about your problem. There are several others. If you type backfire in the search box they will come up.
VetteVet http://67-72chevytrucks.com/vboard/s...light=backfire
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VetteVet metallic green 67 stepside 74 corvette convertible 1965 Harley sportster 1995 Harley wide glide Growing old is hell, but it beats the alternative. |
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#3 |
Registered User
Join Date: Aug 2004
Location: san marcos,tx
Posts: 266
|
thank you, gives me a few ideas on things to check.
__________________
72 GMC sierra 3/4 ton 402 bb ![]() 68 GMC 3/4 ton ![]() 2010 camaro rs: daily driver |
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