I have a 99 xj8 my 'cylinder liner' dissolved!

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Engine firing order

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Jun 7, 2022 - Hello y'all, I was wondering if anyone here knows the firing order of the Jaguar XJ8 2008 4.2 I need to replace an ignition coil on cylinder 6 (misfire and ...

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More here

https://www.google.com/search?q=2006+Jaguar+XJ8+Vanden+Plas.+Firing+order

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Bank 1, Left, Rear

https://www.jaguarforums.com/forum/xj-xj8-xjr-x308-27/cylinder-97509/

lots more information. Misfires seem a common issue.

https://www.google.com/search?q=2000+jaguar+xj8+firing+order

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Sorry I am not familiar with the model but it is considered best practice on all engines to slacken the bolts at the outer edges of the cylinder head first and work inwards either in a diagonally opposite pattern or in a spiral pattern.

The spiral pattern is best suited to engines with two parallel rows of bolts and the diagonal pattern should be used with all other types.

A few engines have an extra head bolt or two that is a smaller diameter and these should be loosened before the others.

It is best practice, especially when the cylinder head being removed is aluminium, to ensure the engine is cold (at least 6 hours since last being run) before loosening the head bolts.

Some engines have wet liners and the cylinder head of these engines must be removed with great care ensuring the liners are not lifted. Do not rotate the crankshaft of a wet liner engine until suitable liner clamps have been fitted. Displacing or moving a liner is likely to damage the base seal and require the engine to be completely dismantled.

The best solution you'll get from books at www.reliable-store.com

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the pistons can be installed from the bottom of the cylinder where there should be a chamfer ( use a ring compressor here makes the job easier--on the bench)
once you have the piston in the cylinder then install the assembly into the block taking care to ensure that the piston is at the top of the cylinder so that the big end doesn't damage the crank journal as you slide the cylinder down into the block I take it that the engine is a diesel ( wet sleeves) so check the liner to block face height before fitting because if the cylinder lip is too low , it will blow head gaskets
make sure that the piston is orientated correctly , the same as the others

You may not believe this, but it happened to me twice. Check the comperssion of the cylinders. If they are low. You have to rewet the cylinderrings. It is called washdown procedure this XJ6 engine is prone to losing compression if flooded, or stored a while...Some people will pour a small amount of oil in each cylinder. I have also heard using a small amount of power steering fluid poured in to the throttle throat. Mine started right up once compression was restored.
Wait for other comments to corroborate this, as I too did not believe it the first time.

the engine in your vehicle is the rover kv6 its a good engine unless it overheats! and the most likely cause is the lower of the cylinder liner seals have failed if the engine overheats it tries to sieze and the liners move up/down and hammers the cylinder heads/gaskets causing damage to the head surface but the main prob because they are wet liners the lower seal to the block fails. its only loctite or similar and gives the problem you have the only way is to remove the engine and replace or rebuild it

cylinder replacement ????? this could refer to the cylinder liners, but you would only do this for a diesel engine if at all......as long as the cylinder head is serviced (machined and pressure tested), and all top engine seals are replaced with new ones, you should not have any further issues.......make sure a compressioin test both wet and dry are carried out to ensure that the head is the only problem

check thermostat

The sensor is bolted to the top of the cylinder block near the rear of right cylinder head
The sensor is accessed by removing the right front fender liner

1. Remove right front tire and right front wheelhouse liner.
2. Disconnect crankshaft position sensor pigtail harness from main wiring harness.
3. Remove two sensor (recessed hex head) mounting bolts
4. Remove sensor from engine.