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2002 Ford Focus 2002 Ford Focus SOHC Engine Knock

Tiny
VALKYRIE
  • MEMBER
  • 2002 FORD FOCUS
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 94,000 MILES
I am getting a rather loud engine knock. It sounds like it is coming from the top end of the motor. Has there been a problem with the Focus that may cause this? Where should I begin to look? I changed the spark plugs and wires. No. 4 plug was a little wet. No. 1, 2, 3 looked okay.
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Friday, April 3rd, 2009 AT 7:53 AM

7 Replies

Tiny
BLACKOP555
  • MECHANIC
  • 10,371 POSTS
4 was wet with what? Oil? Gas?

Have you checked your oil level?
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Sunday, April 5th, 2009 AT 9:01 AM
Tiny
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  • 4 POSTS
No. 4 plug appeared to be wet (damp) with gas. I had just changed the oil about a week prior to this and the oil level is good.
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Monday, April 6th, 2009 AT 8:06 AM
Tiny
BLACKOP555
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Disconnect knock sensor and see if problem gets better or worsens.

Any check engine light?
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Monday, April 6th, 2009 AT 6:58 PM
Tiny
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  • MEMBER
  • 4 POSTS
The check engine light did come on. No. 2 & No. 3 cylinders are misfiring. I did check and change the timing belt and tensioner but this didn't change anything. No. 2 & 3 plugs are wet (appears to be oil). I was able to drive it slowly to a repair shop so they can help me diagnose the problem.
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Tuesday, April 7th, 2009 AT 4:39 AM
Tiny
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Let me know if you want to check up on their prices and diagnostics to let you know if its a good word!
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Tuesday, April 7th, 2009 AT 6:30 PM
Tiny
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  • MEMBER
  • 4 POSTS
The diagnostic test revealed that there is no compression on No. 3. I was told there is probably a seat/seal on one of the valves that may have become dislodged. I am going to pull the head and take it to a machine shop. I was given a price of $325-350 to have the head rebuilt.
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Wednesday, April 8th, 2009 AT 5:28 AM
Tiny
BLACKOP555
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That is a very very good price to have the heads rebuilt.

There is nothing wrong with that and that is a possibility for your problem. Did a wet and dry compression test get performed on that cylinder?
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Wednesday, April 8th, 2009 AT 1:44 PM

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