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2001 Ford Focus Engine Knocks, Runs Rough

Tiny
JUS_JOE
  • MEMBER
  • 2001 FORD FOCUS
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 500 MILES
I recently installed a rebuilt engine in my 2001 Ford Focus (2.0L, SPI) and it ran fine for the first 500 miles, then slowly developed a knocking sound in the engine. I initally suspected the knock sensor had gone bad (98,000 miles on previous engine) and replaced it, but found no relief. I performed a compression test and all cylinders were 150psi (+/- 5 psi) which leads me to believe the piston assemblies are intact. While I had the spark plugs out I cranked the engine over and alas, the knocking had disappeared (it will knock with the plugs in, but plug wires disconnected). This leads me to believe I might have a bad head gasket, but I would appreciate your input before I pull the head off.

Thanks, Joe
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Wednesday, February 6th, 2008 AT 10:57 PM

2 Replies

Tiny
AUTOPRO
  • MECHANIC
  • 45 POSTS
Still engine probs. Of course. Without spark plugs theres was no presure on bearings or piton pins right?
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Wednesday, February 6th, 2008 AT 11:07 PM
Tiny
AUTOPRO
  • MECHANIC
  • 45 POSTS
Head gasket cant make noises, (in this engine ).
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Wednesday, February 6th, 2008 AT 11:12 PM

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