XJ XJ6 / XJ8 / XJR ( X350 & X358 ) 2003 - 2009

Rough running on cold startup

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Old Jan 18, 2026 | 09:40 PM
  #21  
jrraab's Avatar
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From: california
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Had the same symptoms for my2004 X350.
Turns out one of the early posters hit it dead on - good call Lagonia.
It's called "morning sickness" and it killed my car.
I assume low quality gas may have been the culprit.
It's amazing how hindsight gives you 20/20 vision.
 
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