1999 Ford F-150 missing

Tiny
CKARVALA
  • MEMBER
  • 1999 FORD F-150
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 122,000 MILES
My 1999 f150 developed a miss and the check engine light came on. Code reads a misfire in the number 3 cylinder. Replaced coil pack, wires and plugs with no improvement. I'm stumped. PLEASE HELP!
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Wednesday, August 20th, 2008 AT 8:46 PM

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Tiny
BMRFIXIT
  • MECHANIC
  • 19,053 POSTS
INTAKE MANIFOLD GASKET !

Remove spark plug and check for antifreeze
very common on the 6 cylinder for the intake gasket to fail causing small antifreeze to leak into the piston (a reason for a misfire )
and if so you should take care of it as soon as possible or engine damage will occur
good luck
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Thursday, August 21st, 2008 AT 6:25 AM

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