Upon hard acceleration ramping on to the.

Tiny
ANONYMOUS
  • 1987 MERCURY MARQUIS
  • 92,000 MILES

Upon hard acceleration ramping on to the interstate, engine has a intermittent hard miss. It has new platnums, wires, cap &rotor.
Smooth idle at start up but occasional light miss when warm at idle.
Any help out there?
tom

Friday, November 30th, 2012 AT 6:13 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • EXPERT
  • 68,362 POSTS

Tom:

CHeck to make sure the fuel pressure is within spec and check engine compression. You may have a cylinder that is low on compression.

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Friday, November 30th, 2012 AT 6:26 PM

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