Question about 1998 Jaguar XJ8L

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What is the firing order & position of spark plugs in jaguar xj8

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V6 is 1,2,3 on the right and 4,5,6 on the left....Firing order is 1,4,2,5,3,6


V8 is 1,2,3,4, on the right and 5,6,7,8, on the left.....Firing order is 1,5,4,2,6,3,7,8
Jaguar labels this as 1A,2A,3A,4A on the right and 1B,2B,3B,4B on the left and the firing order is 1A,1B,4A,2A,2B,3A,3B,4B

Posted on Mar 19, 2011

  • john
    john Mar 05, 2014

    Depends on the year, the AJ27 4.0 ltr 8cyl. changed in 2002... 1997-2002.5 (june) are from the front of the engine left bank is 1234 and right bank is 5678... from july 1st 2002 and later it would be different, it is from the front of car 1357 on the left bank and 2468 on the right bank...

  • Jason
    Jason Mar 10, 2014

    John is right. Standing at the front of the car: on the 2003 and up 4.2l the left bank is odd 1, 3, 5, 7; the right bank is even - 2, 4, 6, 8. See diagram:http://autorepair.about.com/library/firi...

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How do I change the spark plugs for a 2001 xj8 where are they located


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I took of*** my spark plug wires working on my small block 350 pickup and I don't remember the the firing order to put the new wires back on. Is there a diagram anywhere or is it even that difficult to...


Next time number each lead before you remove it and no. the dissy cap as well

The firing order, which should be cast into the intake manifold, for the chevy small block V8 is 1-8-4-3-6-5-7-2. The firing order is the numerical sequence in which the spark plugs are fired. The insertion position of each spark plug wire around the circumference of the distributor cap can be found according to a clock face. The insertion sequence determines the firing order. The firing order is followed clockwise around the distributor cap starting from the 6:30 position with the 6:30 position being the number one cylinder spark plug wire.
On classic chevy small block engines that use ignition breaker points instead of electronic ignitions, the number one cylinder is the one immediately clockwise of the small metal sash cover on the distributor cap. The firing order starts here. There is no sash cover on the distributor cap for GM HEI electronic ignitions, and the firing order is the same, but starting at the 5:30 position.
The firing order makes sense if you know how the cylinders are numbered. The number one cylinder is the front most on the drivers side and 2 being the front most on the passenger side. From front to back, the cylinders are odd numbered on the drivers side, and even numbered on the passenger side.
See the diagram; Click to open a printable larger image in a new window. The firing order starts with the number one cylinder. We would connect the number one spark plug wire to the distributor cap terminal in the 6:30 position. distributor.pngSince the next cylinder in the firing order is 8 (passenger side rear), we connect the number 8 spark plug wire to the next distributor cap terminal (approximately 7:30 position) in the clockwise direction from number one. You need to be sure you continue the firing order in the clockwise direction around the chevy small block distributor cap from the last installed spark plug wire. Setting the rest of the firing order is just a matter of repetition. Be sure to count the spark plugs from front to back on each side of the motor to identify the correct cylinder number in the firing order.

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1984 pontiac bonnerville plug firing order photo


Hi,
I don't know your engine size, but the link below is a picture of the GM small block firing order with distributor.
The firing order, which should be cast into the intake manifold, for the chevy small block V8 is 1-8-4-3-6-5-7-2. The firing order is the numerical sequence in which the spark plugs are fired. The insertion position of each spark plug wire around the circumference of the distributor cap can be found according to a clock face. The insertion sequence determines the firing order. The firing order is followed clockwise around the distributor cap starting from the 6:30 position with the 6:30 position being the number one cylinder spark plug wire.

http://www.classiccarauto.com/impala/how_to/images/distributor.png

Hope this helps...

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1 Answer

Is it difficult to replace spark plugs in a Jaguar XJ8


Your car does not have plug leads so that will save you a job,the spark plugs are fairly easy to do tho.
Open the bonnet,either side of the engine at the top there are 2 black covers bolted to the top of your engine,bolted to those are 2 smaller covers,remove the 2 smaller covers which will reveal your ignition coils,remove the ciols and your spark plugs are there.
You will have to remove the air filter assembly tho on the right hand side which is easy enough,remove the bolts from pipe at the rear middle of engine,undo the clips which houses the filter and disconnect the engine breather pipe.Re assemble in reverse order,
N.B the spark plugs dont want tightening too tight..or too loose,when the plug nips up just give it a little nip again..GOOD LUCK

Dec 14, 2008 | 1998 Jaguar XJ8L

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