Posted by Tony LudfordTony Ludford
on December 8, 2011, 8:06 pm, in reply to "Re: Jaguar X Type 2001 2.5 petrol P0171 slight misfire"
I'd be thinking the spark plugs are, maybe, incorrect. Had the issue myself with wrong plugs. Both types were listed, secondary ones as optional were same as Mondeo, I'm sure we fitted the Mondeo plugs and no more problem. 
Message Thread 
Jaguar X Type 2001 2.5 - Code P0171, slight misfire # - Stephen December 8, 2011, 10:43 am
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