I aquired a 1998 xj8 at auction so no history is known. I was getting a restricted performance message error code was missfire on # 7, when i resolved the problem the radiator overflow tank was leaking and created a carbon track onthe spark plug boot for that plug. the car is running fine know
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1998 xj8 with 190k miles bought at auction with no history

 

Good for you! Now all you have to do is tell us how many miles is on the cat, and how much did you "steal" it for.