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I have a 1993 gmc jimmy with a 4.3 vortec v 6. I have had ...

Sent to Car Experts September 22, 2006 11:26 p.m.

I have a 1993 gmc jimmy with a 4.3 vortec v 6. I have had several problems it was running very rough and itseemed to be running rich. and rtying to stall and the distributor and plugs were changed a new serpintine belt and muffler were put on and ran fine for a few days i filled the tank and put in stp gas treatment and it has been running very rough again and black smoke comes out the exaustthe short time it was running good the service engin soon light would appear and disappear wonce it began running rough again the light went off and stayed off but runs very rough again

Optional Information:
1993 GMC jimmy 4.3 vortec

Already Tried:
new plugs new distributor cap muffler srepintine belt stp gas treatment

Customer (name blocked for privacy)

Status: Closed Value: $8

Answer
September 23, 2006 1:12 a.m. (1 hour and 45 minutes later)

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Red -- Auto Service Technician -- 98% Positive Feedback on 113 Car Accepts
ASE Certified with 20 Years of Automotive experience.

Answer
September 23, 2006 6:13 a.m. (5 hours and 1 minute later)

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Hammer Time -- L1 Master Technician -- 98% Positive Feedback on 2710 Car Accepts
ASE Mastertech with Adv level Engine performance cert.

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