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  1. J

    4.0 engine knocking

    I HAVE2001 EXPLORER SPORT TRAC 4.0l I BOUGHT TRUCK AS IS . IT HAS A KNOCKING NOISE IT TRIES TO START BUT DONT WHEN I COVERED VALVE BODY ITS NOT SUCKING AIR DOES THIS MEAN TRUCK HAS JUMPED TIME AND POSSIBLY DAMAGED VALVES? IS THIS A GOOD PLACE TO START TROUBLESHOOTING? IS IT TRUE TIMING CHAIN IS...
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