leaning out @4500+ - Team Camaro Tech
Troubleshooting Diagnosing problems done here.

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post #1 of 2 (permalink) Old Jan 30th, 02, 04:14 PM Thread Starter
Tech Team
Join Date: Feb 2001
Location: San jose Ca
Posts: 45

Ive got a slight problem, up untill yesterday my car has ran perfect. good power all the way untill 5500rpm. What i did was, check and cleaned all of my spark plugs and clean out my carb(650demon)with carb cleaner. Now i peg it and i takes off up untill the secondaries open then it starts backfiring and falling on its face. What the hell? ive taken off my secondary bowl and checked for anything stuck in any orifices but found nothing. Ive also tried richening both primary and secondary sides to see if it helped. Nothing. I did not play with timing yet due to the fact that i had it perfect before and the car has never felt so strong. Its a basic 327 with a HEI performer intake and towing cam(semi new).Oh and the fuel pump is electric, its supposed to be rated at 5-7psi, i have not checked fuel pressure either. What else do you think it could be? thanks

68'Pro-touring 5.0 Killer
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post #2 of 2 (permalink) Old Jan 30th, 02, 07:01 PM
Join Date: Jan 2002
Location: PA
Posts: 1

The first thing I would recommend would be check your vac, a lot of the times its your vac lines..
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