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Old 10-27-2012, 11:45 AM   #11
bigrigjim
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i bought the coil a few months back when i did a tune up and never put it on. has spark and fuel pressure was running fine when shut off wouldn't start back.
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Old 10-27-2012, 11:50 AM   #12
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If you've confirmed spark and fuel properly, then time to move on. Buy yourself a compression tester from the local auto parts store - $30.
If your compression shows low readings or readings are "lopsided" then timing is most likely the problem and the timing belt may have shed a few teeth and slipped. If you're not so lucky, one cylinder may read very low due to valve seat problems.

Crank position sensor is fine is you have spark.

IACV problems would result in an inability to idle consistently, not a no-start condition.
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Old 10-27-2012, 11:54 AM   #13
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ok would that happen without any warning?? Was running fine, pulled in to store parking lot turned it off, went inside for 10 minutes, came out and it wouldnt start.
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Old 10-27-2012, 11:58 AM   #14
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Yes.
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Old 10-27-2012, 12:02 PM   #15
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ok thanks very much time to buy a compression gauge and timing belt and tenisoner and go out and play in the rain. not a good way to spend the weekend
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Old 10-27-2012, 12:03 PM   #16
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I can't find the thread, but one guy just went out to start his car for work and it was over.

But here is this.

http://www.focusfanatics.com/forum/s...ped+valve+seat
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Old 10-27-2012, 12:05 PM   #17
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It's possible. Another poster on FF recently had the timing belt go on their car (not a Focus) after coming to a stop at a light.
And just to confirm: Engine spins freely (sounds OK mechanically)?
What do the spark plug ends look like? Sooty and black or wet with fuel or?
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Old 10-27-2012, 12:09 PM   #18
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if it is a valve seat it should show up as loss of compression in one of the cylinder right???
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Old 10-27-2012, 12:11 PM   #19
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engine cranks normal plugs were damp with gas but clean, cleaned and replaced
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Old 10-27-2012, 12:17 PM   #20
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if it is a valve seat it should show up as loss of compression in one of the cylinder right???
Yes.
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