I have a S type 2004 2.5ltr v6 automatic with a vin number N30617. As i look at the engine from the front the left hand bank plugs and coils are hidden under a manifold, the right hand bank are hidden under a Jaguar plastic cover. The coils on the right hand bank have been numbered 1,3,5 in Tipex so I assume the left hand bank are numbered 2,4,6. I had 2 new cylinder head gaskets fitted a couple of months ago so I assume the garage numbered them with Tipex. I find that strange as everywhere i look on line and even in the Jaguar specifications booklet i found on line the left bank should be 1,3,5 not 2,4,6 and the right hand bank should be 2,4,6 and not 1,3,5 any thoughts. i have been looking as I have a misfire on cylinder 6 and 2 hence the codes p0300 p0306 p1314 & p1316.

Thanks

 

The right bank is the 'A' Bank.
The RIGHT FRONT cylinder is #1
The cylinder numbering for your car (later number system)

2 1
4 3
6 5

All this info is in the Vehicle Spec Booklet

bob

 

Here is my configuration (attached)

So I assume 2,4 & 6 are under the manifold is that correct.

 

Is the front of the engine facing the rear of the car or facing the front grille?

 

You are looking the wrong way you should go in the direction that you face when driving.

http://www.jagrepair.com/images/AutoRepairPhotos/SDS003_V6_cylinder_numbering.pdf

 

When I am driving the left bank to me are numbered 5 nearest to me 3 in the middle and 1 furthest from me nearest to the front of the car. So I imagine the right bank to me will be 6 nearest 4 in the middle and 2 furthest away from me nearest the front also.

Front of the car

1 2

3 4

5 6


Me

That is how they are numbered

 

Current V6 to ISO standard Shows

Arrow facing forward I assume facing the front of the car

2 1

4 3

6 5

Mine is

1 2

3 4

5 6

If the arrow is facing the driver

1 becomes my 5

3 stays the same

5 becomes my 1

2 becomes 6

4 stays the same

6 becomes 2.

 

I'm not sure how you divine misfires in #2 from the codes you posted, but if you are persuaded both #2 and #6 are misfiring, and you suspect coil failure as the cause, replace the coils labeled #1 and #5 in the pic you posted.

Remove the upper intake manifold and swap ALL of your coils, straight across, side-to-side if you want them labeled properly. But if you do that, the ones you believe are bad will be under the intake manifold and much more problematic to change. Your shop either labeled them wrong, or swapped sides when they re-installed them, one or the other.

 

Thank you for that but why is coil pack 1 in cylinder 2 and coil pack 5 in cylinder 6.

 

if i change coil pack 3 for coil pack 5 in my photo and do a read it should come up with a misfire in cylinder 4

 

It was a local garage that specialises in Jags. I cannot believe they labelled them wrong. So why would they swap sides.
I had the cylinder head gaskets replaced about 3 months ago cost £2000. I know the plugs were changed as part of the work but they wouldn't have changed the coil packs would they.

 

All fixed I bit the bullet and went to change over some coils only to find out the cylinder chambers where the head of the spark plug sits had water in 2,4,& 6. Sucked out and cleaned them now fine. we have had some heavy rail and i guess it has somehow got to that bank and leaked down into the plug coil chamber's. Had this on a previous s type and found that water was running down the windscreen then under the cowling at the bottom of the windscreen and dripping down on to the bank where the coils are. It is going into the garage on Tuesday for a new senor they can have a look.

 

A question best put to your local garage, I'd say.....however, where angels fear to tread...I'll take the bait and have a go at a logical answer. Perhaps they found historic codes of misfires in #1 and #5 and, upon reassembly, decided to move those coils over to the easy side for you? Then, since numbering 1, 4, 5 looks rather silly, just determined to make a complete side-to-side swap. The problem with this explanation is that it is hard to fathom why they wouldn't have just told you, "we think you have a couple of suspect coils, why don't you buy a pair from us and let us install them while the labor is 'free'?"

 

Hi
I found this video was very helpful for me to diagnose a problem on my Ducati ignition. I had spent over a month looking into this. Once I understood what to do it took me ten minutes.


then go to his case studies https://www.youtube.com/playlist?lis...4sWLv5x2FHNnq-

and then you will know how to test the coils.

 

Thank you.