When to get a tensioner replaced on a Jaguar XJ8?
If you would like us to do a tensioner replacement under third-party warranty, please supply us with contact information about your warranty provider before we start the job. We recommend that if your XJ8/XK8 has passed 35,000 miles, you take preventive action and have the tensioners inspected.
When did the Jaguar tensioner Bulletin come out?
In their Technical Service Bulletin No. X303-68 of February 2005, titled “Rattle From Engine on Start-up and Idle,” Jaguar states: This Technical Bulletin has been issued to address customer concerns of a rattle emanating from the engine on start-up and idle.
Why do you need cam chain tensioners in a Jaguar?
In their zeal to reduce the weight of the valve train and related components as a way of improving fuel efficiency, the engineers under designed the AJ-V8’s timing gear: in particular, the cam chain tensioners.
When did the third generation tensioner come out?
In 2005, Jaguar introduced a third-generation metal-based tensioner kit. (See the photos at left.) We now use the metal-based third-generation tensioners exclusively when replacing cracked first- and second-generation Jaguar V8 tensioners.
If you would like us to do a tensioner replacement under third-party warranty, please supply us with contact information about your warranty provider before we start the job. We recommend that if your XJ8/XK8 has passed 35,000 miles, you take preventive action and have the tensioners inspected.
Why are my cam chain tensioners breaking on my Jaguar?
(The new 4.2L version of the Jaguar AJ-V8 engine has double timing chains.) As a result of their weak design and other factors like engine overheating or poor maintenance, the plastic cam chain tensioners on 1997 to 2000 V8 Jaguars began to experience stress fractures, and so did some of the plastic guides.
In their Technical Service Bulletin No. X303-68 of February 2005, titled “Rattle From Engine on Start-up and Idle,” Jaguar states: This Technical Bulletin has been issued to address customer concerns of a rattle emanating from the engine on start-up and idle.
What’s the difference between double and single chain Jaguar?
These plastic components are part of the AJ-V8’s single-chain design, a weight-saving alternative to the more robust double-chain approach Jaguar has used on most of its six-cylinder engines. (The new 4.2L version of the Jaguar AJ-V8 engine has double timing chains.)
What was the problem with the chain tensioner on my 1998 Jaguar?
Nalley of Roswell, GA, Thsi tensioner thing is a real problem. I have a 1998 VDP with the 4.0 liter engine. With the car out of warranty and with 69000 miles on the engine, one of the chain tensioners failed, resulting in one of the valves punching through a piston.
How much does it cost to replace chain tensioner on Jaguar XK?
Part of my sale included resolution of all existing mechanical issues. One of the mechanical symptoms was: when the engine was cold there was a valve ticking noise. Sure enough, the timing chains, tensioners, blade, guide, several seals and gaskets were replaced. $840 for parts, $1,300 for labor. Warranty paid for it all!
What kind of tensioner do you use on a Jaguar V8?
(See the photos at left.) We now use the metal-based third-generation tensioners exclusively when replacing cracked first- and second-generation Jaguar V8 tensioners. When a plastic tensioner shatters or wears to the point the cam chain becomes loose, a rattling around can be heard in the cam area at the front of the engine.
Can a 1999 XK8 have chain tensioner problems?
This topic is for discussion of chain tensioner problems on some of the older XK models, and how you deal with them. 1997-1999 XK8s can suffer from timing chain tensioner problems. A 2000 model would be better while 2003-2006 are the best. 2003 XKs had over 900 changes. I just spent $4200 to replace the tensioners, chains, etc on my 1999 XK8.