2000 gmc sonoma


Old 10-11-17, 10:13 AM
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2000 gmc sonoma

Need help trying to correct engine problem. Truck is misfiring pretty often sometime it wll jerk the truck.I have changed plugs and plug wires also fuel filter.None of this helped.Any help would be appreciated. Thanks Also this is a 4 cylinder.
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Old 10-11-17, 10:32 AM
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Have you done a compression check? or fuel pressure check?
Old 10-11-17, 01:07 PM
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have you checked for codes, or how about the coil packs, when exactly does it misfire does the engine use any coolant?
Old 10-11-17, 02:09 PM
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Most auto parts stores will read codes for free.
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