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1991 GMC K1500 Sierra SLE 5.7L Ping, Spark knock
This was posted before and you all had some good ideas for me to check. I need a real good trouble shooter `on this one . I checked the timing chain and I have about 8 deg of play. I retarded the timming on the road till it stopped pinging and checked it with ...
FIX posted 3/11/1998
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| VIN | 2GTEK19K5M |
| Engine | 5.7 L / 8 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI / TBI |
| Emissions | OBD1, FED Emissions |
| Symptoms | Ping, Spark Knock |
| Occurs | Always, Hot, Under Load, on Accel, Cruise |
Message Closed w/Summary
Vehicle Data
1991 GMC K1500 Sierra SLE
| VIN | 2GTEK19K5M |
| Engine | 5.7 L / 8 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI / TBI |
| Emissions | OBD1, FED Emissions |
| Symptoms | Ping, Spark Knock |
| Occurs | Always, Hot, Under Load, on Accel, Cruise |
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