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1987 Chevrolet G20 Chevy Van 5.7L Spark Knock
This van is in with a severe spark knock/detonation on acceleration and seems to be lacking power, the first thing I done was check base timing and electronic spark control system, all checked good replaced ESC module anyway, no change. found occasionally woul...
FIX posted 6/18/2002
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Message Closed
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| VIN | 1GBEG25K1H |
| Engine | 5.7 L / 8 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI / TBI |
| Symptoms | Spark Knock |
| Occurs | Under Load, on Accel |
Message Closed
Vehicle Data
1987 Chevrolet G20 Chevy Van
| VIN | 1GBEG25K1H |
| Engine | 5.7 L / 8 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI / TBI |
| Symptoms | Spark Knock |
| Occurs | Under Load, on Accel |
19 Replies Received
19 Replies Received
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