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.
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.
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.
How much does it cost to replace a tensioner on a Jaguar?
When the cars were under warranty, rattling tensioners, or failed engines due to tensioner breakage, would be replaced with beefed-up second-generation plastic tensioners at no charge to the owner.
What kind of chain tensioner should I get for my XJ8?
A reddish/orange (mk1) or cream (mk2) plastic tensioner body is bad news, a grey aluminum metal one (mk3) is good. The cam phasing on the V8 means the timing gear works hard and timing chains can stretch at high mileages or on neglected cars.
What kind of tensioner do you use on a Jaguar?
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.
(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.