What the heck it that ticking???
#1
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Over the last week or so I have noticed a ticking sound when my 04 XJR is running. It sounded like a top end noise like a lifter when the oil is low or thin, but it is not related to engine rpm. I repeat, it is NOT related to engine rpm! It is loud enough that a passenger would say, "what it that ticking sound?"
If I an in park and gently increase the rpm, the noise does not change, but if I bring it up to 3000 rpm and take my foot off the throttle, it might stop for a few seconds, then start again. Its driving me a bit nuts...ideas?
If I an in park and gently increase the rpm, the noise does not change, but if I bring it up to 3000 rpm and take my foot off the throttle, it might stop for a few seconds, then start again. Its driving me a bit nuts...ideas?
#2
#4
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I am running out of ideas, but the fuel vapour purge valve might be clicking away to purge the vapour canister. However this should stop when it's finished. Also try turning off the air con and see what happens. That is not revs dependent unless the compressor is whining. There are a couple of valves in the aircon assembly.
#7
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philwarner
XJ XJ6 / XJ8 / XJR ( X350 & X358 )
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09-10-2023 11:30 AM
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