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06-15-2010, 09:49 PM
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#1 |
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Senior Member
 
Join Date: Jan 2002
Location: Williston, ND
Posts: 2,999
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Vaccuum Leak?
Ok, need some outside input for my little problem. Truck in questions is a 68 gmc, running a '70 402 and turbo 400. When I parked it last winter, it ran just fine. Started driving it again a couple of weeks ago and it would sputter through the carb. Tried adjusting timing, air/fuel mixture, etc but it still "backfires" through the carb really bad(worse now). I have replaced the carb gasket and the cap and rotor(HEI). I'm thinking a vaccuum leak somewhere but I have yet to find it. The truck also has factory a/c but I have check those two little lines. Any help is appreciated.
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68 Chevy CST/10, 50th Anniversary, 327/th400, 373 posi, buckets 68 GMC Shortbox Stepside, 402/th400, Tilt, Tach, Bucket Seats, 3.08 Positraction 69 Chevy Camaro SS, 383, 4 speed, positraction 70 Chevy El Camino SS396, Triple Black, 454/th400, Tach 70 Chevy Shortbox Stepside 4x4, 350/th350, Tilt, Tach, Cab Lights, Bumper Guards, Tow Hooks 70 Chevy 3/4 Longbox, 350/auto, 70k, SURVIVOR 71 Chevy Blazer, CST, 350/auto 71 GMC Sierra K2500, 454, 4 speed, 4.10 posi, 37s 71 Custom/30, Open Road, 350/th400, tilt 72 Chevy Shortbox Fleetside, 496 Stroker/th400, Tilt, Tach, Bucket Seats, 3.42 Posi 72 GMC Sierra Grande 2500. 427/th400, tilt, a/c, tool and stowage, buckets/console, 3.54 posi |
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