Mechanics

GMC C1500 COMPRESSION PROBLEM

1997 GMC C1500 • 450,000 miles

I replaced spark plugs, wires, rotor button, cap etc and still have a miss in number 5 and 7 after it warms up. Works fine when cold. I even had injectors flushed.
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Guest
March 1, 2013.




Check compression in those cylinders acheck fuel pressure if low causes this, check for a vacuum leak.

Hmac300
Mar 1, 2013.


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