It was worthwhile looking at the PCV valve!
There’s my rattle. What did you replace your’s with? Parts stores don’t
carry that type, and it’s unusual in size (diameter) and spring return. I
wonder if a new one (OEM) will stll be noisy?
Have you got your steering rack together again?
Thanks for the response.
I’m afraid your answer and description sounds like bad news for me and my 85
XJ-S. (See the rest of my response below your reply).
rattling noise". John, Kirby and others, can you describe this noise
for those of us who think we hear it (or fear it), and to
differentiate it from high mileage valve rattle or ticking?.
Mine sounded EXACTLY like a Chevy with a bad >lifter. Note, however,
that on mine, the valve had fallen about 1/8" but had not >come out.
If it comes out, I suspect the sound would be different.
I’ve never heard a Jag V12 with a high mileage valve >rattle or ticking.
I thought it would be constant.
Can you tell me what are some of the other symptoms?
I have not driven another XJ-S enough to compare, but I am surprised and
shocked at how many of my friends with XJ-S’s disregard or avoid looking
into loss of top end power (because they never use it or don’t realize their
rev’s stop at 4,000 or so (my advance WAS sticking, but is now serviced and
freed up, but I still have to rebuild the vac advance module).
Boy, am I surprised to hear that Jag V12’s never develop valve rattle or
ticking. Does that mean that such sounds translates that it’s always a
dropped valve seat?
-To unsubscribe go to