
1997 Chevrolet Blazer 4.3L Misfire, spark knock
The customer complaint is the check engine light flashing over 50 mph. Using a Tech2 the misfire graph is showing a slight misfire on all cylinders at all times while driving, over 50 mph #2 cylinder goes off the screen. I pulled #2 plug to look at it and the ...
FIX posted 11/23/2009
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Message Closed w/FIX
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VIN | 1GNDT13W4V |
Engine | 4.3 L / 6 cyl / GAS |
Trans | 4-speed Automatic (Electronic) |
Delivery | FI |
Emissions | OBD-II Compliant |
Symptoms | Misfire, Spark Knock |
Occurs | Under Load, on Accel |
Trouble Codes
P0300 | Multiple Misfire Detected |
Message Closed w/FIX
Vehicle Data
1997 Chevrolet Blazer
VIN | 1GNDT13W4V |
Engine | 4.3 L / 6 cyl / GAS |
Trans | 4-speed Automatic (Electronic) |
Delivery | FI |
Emissions | OBD-II Compliant |
Symptoms | Misfire, Spark Knock |
Occurs | Under Load, on Accel |
Trouble Codes
P0300 | Multiple Misfire Detected |