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My 07 Mazda pulled codes for misfiring cylinder.

Tiny
ANONYMOUS
  • MEMBER
  • 2007 MAZDA CX7
  • 98,000 MILES
My 07 mazda pulled codes for misfiring cylinder number one. I did a compression test and it said it was only at 64 psi. When I eccelerate it hesitates really bad. What could the problem be and what's the best way to fix it?
Monday, March 4th, 2013 AT 5:38 PM

1 Reply

Tiny
BLAZE45
  • MECHANIC
  • 380 POSTS
If your compression is that low, pour oil into the spark plug hole and do the compression test again. If the compression goes up you need new rings. If not, you might need to have new valves installed. Both require removing the head. Test the other cylinders and see where they are right now.
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Friday, April 5th, 2013 AT 2:31 AM

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