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Matt, Mechanical Engineer
Category: Jaguar
Satisfied Customers: 22907
Experience:  BEng hons Mech engineering, in auto industry 22 years
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REF S Type jaguar 1999 3 litre manual , car has now got a ticking

Customer Question

REF S Type jaguar 1999 3 litre manual , car has now got a ticking sound , this was silent until warm but is now more obvious . one mechanic suggested it may be a lifter and it would not be a practical repair due to cost . just want to know if this noise is a common fault or could it maybe be something else that is fixable ?
Submitted: 4 years ago.
Category: Jaguar
Expert:  Matt replied 4 years ago.

if it is a lifter then it'll be rythemic and in time with engine rpm

so a regular tapping that increases with engine speed

an oil flush and fresh oil can sometime help here - but as you've already tried that the onl other course is new parts

one other thing to check is thatyou don't have a stone trapped in an ancillary pulley groove and also check for exhaust leaks as these can sometimes produce a 'tapping'

all the exhaust joints - where the manifold joins the head and the down pipe joints just before the catylst - the best way to do this is to start the engine from cold and feel around each joint with your bare hands - feeling for exhuast gas blowing over your fingers - you'll have about 30 seconds before it all gets too hot.

Customer: replied 4 years ago.

the ticking does go in line with revs when increasing but goes out of sync when revs drop ? please advise