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1994 GMC K1500 Sierra SL 4.3L Hesitation, Hesitation, Hesitation VIN: 1GTEK14ZXR
This truck come from another shop with no power and Hesitation under load they replace fuel injectors with no luck. I set the ignition timing to 0 degrees with the timing connector unplug and that make it wors, so I have to advance timing 17 degrees to...
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