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I have a 2003 2.0 auto Ford Mondeo which keeps blowing a spark plug please can u help thank steven

Tiny
STEVEN REEVE
  • MEMBER
  • 2003 FORD MONDEO
  • 105,000 MILES
We have put new plugs in, its fine for a while then one goes again
Thursday, March 1st, 2012 AT 1:37 PM

6 Replies

Tiny
WRENCHTECH
  • MECHANIC
  • 20,757 POSTS
What is happening to these plugs?
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Thursday, March 1st, 2012 AT 2:00 PM
Tiny
STEVEN REEVE
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  • 4 POSTS
It seems like they just blow or starts to give up, cos we put a new plug in and its fine until it gives up and its always the same one out of the 4
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Thursday, March 1st, 2012 AT 2:08 PM
Tiny
WRENCHTECH
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Spark plugs don't "blow". The melt down over time, they crack or they get fouled with something. I suspect yours are getting fouled and you need to find out if it's too much fuel or too weak of spark.
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Thursday, March 1st, 2012 AT 2:16 PM
Tiny
STEVEN REEVE
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Ok thanks. Do u think there could be some bigger reason why the engine would keep missfiring then it be fine for a while with new plugs. Thanks
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Thursday, March 1st, 2012 AT 2:25 PM
Tiny
WRENCHTECH
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  • 20,757 POSTS
Of course there is. That's what I just said The plug is just the damage that is resulting. The engine needs to be diagnosed properly.
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Thursday, March 1st, 2012 AT 2:28 PM
Tiny
STEVEN REEVE
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Ok thanks
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Thursday, March 1st, 2012 AT 2:34 PM

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