2002 FORD FOCUS 2002 FORD FOCUS SOHC ENGINE KNOCK

  • Tiny
  • Valkyrie
  • 2002 Ford Focus

Engine Mechanical problem
2002 Ford Focus 4 cyl Front Wheel Drive 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

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  • Tiny
  • blackop555
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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
  • Valkyrie
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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
  • Valkyrie
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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
  • blackop555
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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
  • Valkyrie
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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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