hi guys, with the number of motor 000428xxxxxxx, chain tensioners that I have 1 or 2 generation?? ,. I'm from Argentina, I have a xkr with 29 000 km.

 

The second generation tensioners, with the addition of the spring, occurred in October '98 therefore you should have them.

 

Still plastic that should be looked at!

 

thanks guys, I have to replace them with 29,000 km? , Heard a knock at boot time ago.sorry lenguage , soy argentina .

 

Time and heat can break them down too. You probably do not have a problem at this time, but the thought of a destroyed engine would scare me. It is easy to check the upper tensioners (these are the problem ones) and it would give you peace of mind.

 

thanks, I heard a blow cold on two occasions in 1 year. thought could chain after prolonged rest without operating.

 

Would someone post the guide on the chain tensioners and how to determine which generation someone would have, please?

I am in the total dark about this but my car has been driving a little rough and the XK8 2002 is at 125K miles.

Thanks!

 

I have a 2000 XK8. I changed the upper tensioners at 40,000 miles. They were the second generation ones with the spring. They appeared quite robust, but had a design flaw and were just starting to crack at the bottom of the cylinder. I have posted pictures in detail. If you do a search on my handle you will find them. There is another thought. We had one post about a late production 2002 that was the 4.0 engine, but it had the very latest cam drive system that everyone thought only was in the 2003 4.2 engine. Who knows you might be lucky. He certainly was.

 

Here are the secondary tensioners in order (Generation 1 to 3).

bob gauff

 

Motorcarman thanks, excellent illustration.