Secondary or Primary Tensioners?
#1
![Default](/forum/images/icons/icon1.gif)
I bought a 2000 XJ8 last weekend and am incredibly happy because I have always wanted a Jaguar and finally found one I could afford. The car has 58,000 miles on it, runs great and is in very good condition. I am starting to feel a little uneasy though after reading all the posts here about the timing chain tensioners. From all I've read so far it seems to me that the secondary tensioners are a bigger problem and fail more frequently than the primary tensioners. I am quite mechanically adept and would have no trouble performing the repair but I wonder if it is necessary to replace both the primary and secondary tensioners, or is replacing just the secondary tensioners enough? Does anyone have any statistics about frequency of failure between primary and secondary? Are there any overall statistics about the frequency of this failure based on total vehicle production? So far I've found great info here and will continue to look here for advice from other members.
#2
![Default](/forum/images/icons/icon1.gif)
if you are going in there you might as well do both and when you button it up you won't have to worry anylonger with the upgraded tensioners. Don't know about the statistics but the tensioners on 4.0 motors on all Jag models eventually go. My S Type went at 67,000 miles. A loud ticking noise from the front of motor is a big giveaway.
#3
Guest
Posts: n/a
![Default](/forum/images/icons/icon1.gif)
Mine went at 70,000 and were originally replaced by jaguar under warranty. The tensioners were replaced with the 2nd generation which started to break six weeks ago (at 146,000). I replaced the whole set (primary & secondary with the new 5th generation which are very nice and made of much stronger material (i think Jag have learnt by now). I got my full tensioner and guide set from Euro-jag for £310+p&p - Job done.
![Big Grin](https://www.jaguarforums.com/forum/images/smilies/biggrin.gif)
#5
![Default](/forum/images/icons/icon1.gif)
My guess is that most ticksare actually one/both of thesecondary chainson the rotation. I would think that a big culprit would probablybe lots of chain sag from losing/gaining too muchtension from a bunk tensioner. I'd ask the Techs.
3rd gen all-metal tensioner's for4.0L are all you need.
Check mythread about my replacement, you will see how bad it can get without actually busting.
3rd gen all-metal tensioner's for4.0L are all you need.
Check mythread about my replacement, you will see how bad it can get without actually busting.
#6
![Default](/forum/images/icons/icon1.gif)
Thanks to all for your replies. I have been reading a lot on the forum in the last week and am wondering if I should wait until there is a problem. I see many posts from FactoryJagTech and he says "if it aint broke, don't fix it." Will there be a definite warning that the tensioners are bad or can they fail without me knowing it? I know there has been a lot of discussion of this topic and I apologize for my naivete, but I have only had my car about a week and have no experience working on Jags.
Thanks
Thanks
#7
Join Date: Jun 2007
Location: Pompino Beach , FL
Posts: 2,076
Likes: 0
Received 39 Likes
on
35 Posts
Trending Topics
#8
#10
![Default](/forum/images/icons/icon1.gif)
https://www.jaguarforums.com/m_51628/tm.htm
Check that thread, it's mine. It's the most looked at thread on this topic it appears. Should be stickied to show how bad it tensioner's can get. It is my tensioner replacment with pics. Both sets. You will see how bad it can get. DO NOT wait to do this job, or you'll be buying a new ride. (lot cheaper than fixing)
I have the tools you need, I am selling for $185 shipped, only used once. They retail $400+ at my Jag dealer, 4 easily machined tools, what a crock.
I will take paypal.com (must be verified) and money order.
Check that thread, it's mine. It's the most looked at thread on this topic it appears. Should be stickied to show how bad it tensioner's can get. It is my tensioner replacment with pics. Both sets. You will see how bad it can get. DO NOT wait to do this job, or you'll be buying a new ride. (lot cheaper than fixing)
I have the tools you need, I am selling for $185 shipped, only used once. They retail $400+ at my Jag dealer, 4 easily machined tools, what a crock.
I will take paypal.com (must be verified) and money order.
#11
Thread
Thread Starter
Forum
Replies
Last Post
mikiep
XK8 / XKR ( X100 )
14
12-20-2019 07:37 PM
FS[NorthWest]: 2004 X-type 3.0 24,500miles! $8500
millertic
PRIVATE For Sale / Trade or Buy Classifieds
0
09-30-2015 08:11 PM
Paulie710
S-Type / S type R Supercharged V8 ( X200 )
0
09-28-2015 03:49 PM
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)