x Type jag running on 5 cylinders ?

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Feb 17, 2009 | 01:46 PM

tambo

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x Type jag running on 5 cylinders ?

Please help i have a 2003 2ltr x type jag ive never had any problems with her until i jet washed under the bonnet the engine management light came on and she was only running on 5 so i changed the plugs and she was fine the management light went out i parked the car up and never used it for about 6 weeks started and drove fine until i stopped and went into the shops came back out and the management light was back on and she is only running on 5 again
Please help
Tam

Feb 17, 2009 | 04:05 PM

Thermo

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Joined: May 2008

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From: Great Mills, MD

Tambo, while I can't speak for Jags specifically, but on my Ford, the COP (coil on plug) for each plug can develop a crack in the top of them, allowing moisture into them. Once this happens, it can cause the COP to short out internally, not allowing the cylinder to fire. I would check the top of all your COPs and see if any are cracked. In a lot of cases, this is the easy way to tell which cylinder is not firing on a Ford. This same logic should still apply as Ford owned Jag and shared a lot of technology between the two.