XJ XJ8 / XJR ( X308 ) 1997 - 2003

misfiring 4.0 v8

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Old Jan 16, 2014 | 01:43 PM
  #1  
ricky.younger's Avatar
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From: scotland
Default misfiring 4.0 v8

hi

i have a 2001 4.0 x308, the car drove fine with no problems, it had been off the road for around six months but has just been shunted about and left ticking over with no real drive whilst bodywork was being fixed, the car had a short drive around town then taken for an mot, now car is back it has developed a misfire,

put new plugs in, no difference, checked coil packs and swapped them over no change, new fuel filter no difference, put injector cleaner into fuel no difference,

plugged into code reader and p0300, p0301, p0302,p0303.p0304, all indicating a misfire

going to take the injectors out to clean them


but anyone else had issues like this?
 
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Old Jan 16, 2014 | 03:27 PM
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If you pull the injectors, plan on replacing the seals. Several threads have indicated leaks when trying to reuse them.
 
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Old Jan 16, 2014 | 03:56 PM
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+1 yes, change seals

I don't see how so many went bad all at once, though.
 
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