98 XJR Chain rattle .
#1
98 XJR Chain rattle .
Hello Every one i am new here and just got a 98 XJR with 120k but it has a pretty loud rattle from the right side timing area . I noticed that the cover has a small crack where the chain has probably worn through over time . I have not taken it apart yet so i am not sure if i should order all the chains and tensioners or maybe just the tensioners and have the cover repaired ? I have been doing some reading using the search button but wanted some more opinions and what special toold i might need . The car runs fine just underpowered and makes noise .
#3
#4
The XJR's are not "underpowered" -- so something is up.
The early engines did have Nikasil - so you need to test the engine to make sure all is well with the bore. Do you think the chain could have already jumped a tooth.
You are in a sticky situation as you need to test the motor without having what sounds like a pending timing chain failure
The early engines did have Nikasil - so you need to test the engine to make sure all is well with the bore. Do you think the chain could have already jumped a tooth.
You are in a sticky situation as you need to test the motor without having what sounds like a pending timing chain failure
#5
The rattle plus the low power you mention are sure signs that the exhaust cam chain has already jumped one tooth. If it jumps another you will terminally damage your engine.
You can either 'rent' the cam alignment lock tool set or use the zip tie method of replacing the tensioners. You seem to have found the search function and there are plenty of posts on the subject.
Welcome to the forum and the wonderful world of Jaguar!
I would not start the engine again until this is resolved. I would not start the engine again until this is resolved. I would not start the engine again until this is resolved. I would not start the engine again until this is resolved. I would not start the engine again until this is resolved. I would not start the engine again until this is resolved. I would not start the engine again until this is resolved. I would not start the engine again until this is resolved. I would not start the engine again until this is resolved. I would not start the engine again until this is resolved. I would not start the engine again until this is resolved. I would not start the engine again until this is resolved. I would not start the engine again until this is resolved. I would not start the engine again until this is resolved. I would not start the engine again until this is resolved. I would not start the engine again until this is resolved.
You can either 'rent' the cam alignment lock tool set or use the zip tie method of replacing the tensioners. You seem to have found the search function and there are plenty of posts on the subject.
Welcome to the forum and the wonderful world of Jaguar!
I would not start the engine again until this is resolved. I would not start the engine again until this is resolved. I would not start the engine again until this is resolved. I would not start the engine again until this is resolved. I would not start the engine again until this is resolved. I would not start the engine again until this is resolved. I would not start the engine again until this is resolved. I would not start the engine again until this is resolved. I would not start the engine again until this is resolved. I would not start the engine again until this is resolved. I would not start the engine again until this is resolved. I would not start the engine again until this is resolved. I would not start the engine again until this is resolved. I would not start the engine again until this is resolved. I would not start the engine again until this is resolved. I would not start the engine again until this is resolved.
Last edited by test point; 01-05-2012 at 06:26 AM.
#6
As Test has mentioned, and without doubt is 100% correct, you are a hare's breath away from destroyed engine!!!!!
You will find a broken timing chain tensioner once you have the cam cover off - this is the first job.
The second is to locate a special tool set to change the tensioners.
Good luck, and do not start the car!
You will find a broken timing chain tensioner once you have the cam cover off - this is the first job.
The second is to locate a special tool set to change the tensioners.
Good luck, and do not start the car!
#7
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[quote=test point;450180]The rattle plus the low power you mention are sure signs that the exhaust cam chain has already jumped one tooth. If it jumps another you will terminally damage your engine.
You can either 'rent' the cam alignment lock tool set or use the zip tie method of replacing the tensioners. You seem to have found the search function and there are plenty of posts on the subject.
Welcome to the forum and the wonderful world of Jaguar!
I would not start the engine again until this is resolved. I would not start the engine again until this is resolved. I would not start the engine again until this is resolved. I would not start the engine again until this is resolved. I would not start the engine again until this is resolved. I would not start the engine again until this is resolved. I would not start the engine again until this is resolved. I would not start the engine again until this is resolved. I would not start the engine again until this is resolved. I would not start the engine again until this is resolved. I would not start the engine again until this is resolved. I would not start the engine again until this is resolved. I would not start the engine again until this is resolved. I would not start the engine again until this is resolved. I would not start the engine again until this is resolved. I would not start the engine again until this is resolved.[/quote]
Lol.....You put your point across so well Tom, thanks and good advice
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