I am wading through the consequences of not dealing with the secondary timing chain tensioner issue in my 2001 XK8 convertible. At 99,000 miles, the secondary tensioner disintegrated, with no prior warning of chain rattle or misfire.
The secondary timing chain broke, causing serious damage. I got the cylinder head off yesterday and found that I have 2 bent exhaust valve stems, but luckily no piston damage.
I am now trying to find out what type of valve compressor to buy/rent/borrow to remove/replace the damaged valves. I have searched the forum and not found any information about which compressors will fit. I tried the Autozone loaner today, but that will not work.

Any suggestions?

 

Start with post #94 in this thread:

https://www.jaguarforums.com/forum/x...t-77642/page5/

Graham

 

Thanks Graham. I managed to construct a tool to remove the bent valves, but it was too unwieldy to be able to use it to put the keepers back on the new valves! I will order one of the tools per the link in your post. I am delayed a few days anyway as my new head gasket has got lost in transit!

Thanks!!

 

When you get you new valves in you will need to adjust your valve clearances. I would put solvent in the valve chamber to see if the solvent seeps or drains into the exhaust or intake ports. If it does you will need to have a valve job. The bent valve may have damaged the seat. Now is the time you do it before you put your head back on and discover you have low compression.
Even with the proper spring compressor, I got mine at Summit Racing, it is difficult to get those small keepers reinstalled.

 

Thanks BobRoy. Yes, I guess I'll have to do that for all of the inlet valves as well, as I have also replaced the inlet camshaft. The secondary sprocket on the inlet camshaft had a few teeth broken off by the secondary timing chain when it broke. Thanks for the heads-up.