What should I do about my Jaguar XJ6 timing chain?
Two alternatives – either get it off somehow; or remove the timing cover!!! It took a bit of patience but a large, good quality water hose clip (Jubilee size 2a) done up very tightly proved a very elegant solution (thanks to Jeff Watson) and avoided swearing, shouting and the sound of multiple hammer blows.
How do you change ignition timing on a JAG?
Set the distributor micrometer adjustment to the centre of the scale. Attach a voltmeter or 12v light between the distributor connection and ground, and turn on the ignition. Rotate the distributor until the light just comes on. Clamp the distributor. Then take the car out and drive it.
What is the pivotted guide on a Jaguar XJ6?
Top left is the pivotted guide which maintains the tension on the chain when the chain tensioner is in place. The damper on the tension (right) side of the chain is straight and fixed. The chain is slack and has dropped in the picture, take care NOT TO TURN THE ENGINE in case it jumps a sprocket.
When did I need to replace timing chain guides?
Replacing the timing chain guides became a must when I discovered (at 118,000 miles) that the start-up rattle was there all the time at 2,000rpm. This work was carried out in December 2009 and I avoided removing the camcovers or the head.
What causes the timing to change on a Jaguar V12?
The Jaguar V12 design eliminates most wear items that would normally cause ignition timing to vary, such as ignition points or sloppy camshaft drive systems. The only remaining reason for the timing to change would be wear in the timing chain itself, and the Jaguar timing chain normally wears so slowly as to be insignificant.
What do I need to adjust the timing on my car?
Your timing must be at the correct setting for your car to perform at top level, affecting the speed and efficiency at which the engine fires. You can adjust your car’s timing with a timing light and a set of wrenches, tools available at any auto parts store.
What kind of transmission does a Jaguar XJ6 have?
Jaguar XJ6 Service and Repair Manual 3261 Jaguar XJ6 Models covered Jaguar XJ6 models with 3.2 litre (3239 cc), 3.6 litre (3590 cc) & 4.0 litre (3980 cc) six-cylinder in-line dohc petrol engines and automatic transmission
When do you change ignition base idle timing?
Typically, when your car comes from the manufacturer, ignition base idle timing is set to a manufacture specification before top dead center. The timing advances as the engine’s speed accelerates, however, resulting in a variable that will need to be periodically adjusted using a timing light.