Are leaking valve seals a frequent issue?
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Are leaking valve seals a frequent issue?
I have a 2005 XJR with the 4.2 S/C engine. It has only 91,000 km. If it sits a few days, there is a puff of blue smoke upon startup. This would suggest either worn valve guides or leaking/failed valve seals.
Is this a frequent problem on these engines? What experiences have others had? Maybe the seals alone are the problem? I don't know what design of seals are used in this engine. Are guides typically wearing out at such low mileage?
I appreciate any input folks have.
Is this a frequent problem on these engines? What experiences have others had? Maybe the seals alone are the problem? I don't know what design of seals are used in this engine. Are guides typically wearing out at such low mileage?
I appreciate any input folks have.
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