1996 Buick Roadmaster Logo
Anonymous Posted on Jan 04, 2012

ENG TURNS OVER BUT DON'T START

  • 2 more comments 
  • Anonymous Jan 08, 2012

    STILL IT DOES NOT START,TURNS OVER FINE ,CHANGED COIL AND MODULE,DOE'S 5.7 ENG HAVE A CRANK SENSOR,AND IF SO WHERE IS IT

  • Anonymous Jan 08, 2012

    DISTRIBUTOR CAP,ROTOR, AND WIRES WERE ALSO CHANGED3

  • Thomas Gormley Jan 08, 2012

    You definitely do not have a problem with spark if the motor cranks. Your issue is either fuel or compression. I'd check for fuel. Pumps go out in those all the time. It could be more difficult, but check for fuel before going further.

  • Thomas Gormley Jan 09, 2012

    I was completely incorrect guaranteeing you had spark. That could still be your problem. A motor cranks without spark. I wasn't thinking when I typed that.

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Thomas Gormley

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  • Posted on Jan 04, 2012
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Need to check for fuel pressure. There is a schrader valve on the fuel rail on the belt side of the motor under the upper intake. Really common for those vehicles' fuel pumps to **** out. If you have fuel check for spark. You can do that by removing a spark plug then connecting the wire back to it and leaving the plug tip near unpainted metal on the motor. Step back DO NOT TOUCH THE PLUG WHILE THE MOTOR IS BEING CRANKED and have someone else try to start the car. You will see a blue or white spark at the tip if you're getting spark. An orange or red spark indicates a weak ignition coil.

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