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Focus Running Problem


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#1 martinzs

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Posted 25 January 2013 - 06:26 PM

Hi I'm new hear and looking for some info/help I've got a 03 focus and when I was driving the other nite my engine management light flashed a few times then went off and the car started running funny. I got it trailered to a local garage there is now error code showing. And it idles but when you rev it it's missing. There is no compression on number 4 and there is 2 bent valves and spark plug is black. Could any one tel me what could of corsed the problem or how much it would cost to fix.

Any help/info would be much appreciated

Thanks Martin.

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#2 artscot79

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Posted 25 January 2013 - 06:51 PM

it sounds like youre timing belts slipped if youre valves are bent

#3 martinzs

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Posted 25 January 2013 - 07:09 PM

Timing belt is fine.

#4 dezwez

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Posted 25 January 2013 - 07:29 PM

belt can still slip and bend vavles

#5 artscot79

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Posted 25 January 2013 - 07:31 PM

the belt will look fine but may have slipped round on the cam possibly due to a faulty tensioner bent valves mean the internals have went out of timing and smashed together bending the said valve so i reckon the belt slipped youre timing will be out car will missfire and run like a bag of spanners

#6 Stoney871

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Posted 25 January 2013 - 11:30 PM

Agreed, only two things will cause damaged valves.
Either the timing is out or the top end was starved of oil causing the valves to stick.

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