What causes a Jaguar camshaft timing chain to crack?
The tensioners tend to break after a period of time, causing the chains to jump and sometimes crack. In such a scenario, the best recourse is to check the engine for any abnormal noise on the initial startup as this is a sure indication of a failing tensioner. How to set a camshaft timing chain on a Jaguar?
How to replace the timing chain on a Jaguar XJ8?
How to replace the primary timing chain on a Jaguar XJ8? First, take out the right hand bank primary chain. Then, detach the variable valve timing (VVT) solenoid and the bush carrier. Then, lodge the camshaft locking tool to the left hand bank camshaft and align the shafts as required.
How is the timing of the camshaft set?
The cam timing can now be set by the following initial procedure described in “Method 2” and then turning the crank to the appropriate position. In the case of the inlet cam, this should be 106 degrees A.T.D.C. At this point, the drive can be disconnected and the camshaft rotated slightly until the inlet valve is fully open.
What happens to the chain tensioner on a Jaguar E-Type?
This can be seen by the fact that neither cam moves when the chain tensioner is backed-off, and would explain why Jaguar thought it useful to suggest “turning the engine each way slightly” – whereupon the slack can be moved from the exhaust-side to the inlet-side at will, or split and felt on either side.
The tensioners tend to break after a period of time, causing the chains to jump and sometimes crack. In such a scenario, the best recourse is to check the engine for any abnormal noise on the initial startup as this is a sure indication of a failing tensioner. How to set a camshaft timing chain on a Jaguar?
How to replace the primary timing chain on a Jaguar XJ8? First, take out the right hand bank primary chain. Then, detach the variable valve timing (VVT) solenoid and the bush carrier. Then, lodge the camshaft locking tool to the left hand bank camshaft and align the shafts as required.
This can be seen by the fact that neither cam moves when the chain tensioner is backed-off, and would explain why Jaguar thought it useful to suggest “turning the engine each way slightly” – whereupon the slack can be moved from the exhaust-side to the inlet-side at will, or split and felt on either side.
What’s the best way to adjust a timing chain?
Slacken the locknut ( this is one of those rare nuts which are Whit rather than AF ) . Use the eccentric tensioner to tension one side of the chain – I use a pair of needle nosed pliers to turn the tensioner – usually anti-clockwise – once the locking plunger is depressed , so that the exhaust camshaft side of the chain is tensioned .