1989 Chevrolet Blazer Silverado 5.7L Poor Idle Quality, Misfire, slight backfire
We replaced the engine on this vehicle after the old one locked up. The customer requested performance intake and roller rockers. This vehicle sputters and slightly backfires for the first 1-4 min. of idle in the morning but never again when warm. if the v...
FIX posted 4/8/2022
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Vehicle Data1989 Chevrolet Blazer Silverado
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Vehicle Data
1989 Chevrolet Blazer Silverado
VIN | 1GNEV18K6K |
Engine | 5.7 L / 8 cyl / GAS |
Trans | 4-speed Automatic |
Delivery | Fuel Injection / TBI |
Emissions | CA |
Symptoms | Poor Idle Quality, Misfire, Slight Backfire |
Occurs | Cold |