going to change spark plugs on 2000 3ltr stype..does anyone know what gaskets or/and o rings i need to get? Thanks

 

You'll find some info here- https://www.jaguarforums.com/forum/s...-s-type-52097/

Have fun!

 

Dennis in the above post (norris) play attention to post #9 and #12!

You also may find yourself changing the valve cover seals (gaskets) as well available from Auto Zone. Felpro after markets are fine for those as well. I have the part numbers for all seals (gaskets) if need be, I would just have to dig them up...somewhere. The valve cover seals are a known failure, that leak oil into the spark plug wells.

 

You don't need any seals.
I changed my spark plugs 4 years ago and still running problem free.
I did not change any gaskets. Just take the intake manifold of change plugs put manifold back.

All together an easy job and should take less than an hour

 

You’re missing the point. No it does not require gaskets BUT if you find the plugs wet with oil then you need to replace the spark plug well seals. These are very common to leak. Plus with the V-6 one side is a LOT of work to change. The other not so much.

So the proper question really becomes this: How lucky do you feel? If you going to dump the car then don't bother with the gaskets. If you’re keeping the car you will far ahead to plan on changing the plugs, cam cover gaskets and spark plug well seals. Coils can also be an issue but you don't mention and miss-fires so might not be a problem?

Also check out a few more things as the V-6 is also known for vacuum leaks and IMT O-rings leaking. These are also very easy to change when doing the rest of it. Be careful about reusing the intake gaskets.
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Jochem00, I am glad it worked out for you!

 

when i got my xkr i sold my mint s type to my son..I did 40k in the car and god knows when the plugs were changed b4 i got it.we diceded to change the plugs as part of a service ..as you know one side easy other side a pain.when we take the input manifold off to change them we want to have everything to hand just in case. not sure what to get O rings.. gaskets ect..i dont want to strip it down and have to abandon it in bits.
many thanks for your info
Dennis

 

Dennis if you have an Auto Zone, Advanced Auto, PEP Boys etc..... You can purchase Fel-Pro aftermarket gaskets (seals) for the upper intake, lower intake and valves, pretty cheap compared to the OEM. The green IMT O-Rings are dealer only (around $3.00 ea., you need 2). See below.

WHOOPS, I just saw as well that you are in the UK, so no Big Box Auto Parts stores...SORRY.

 

Dennis, I just reread the OP. You are working on a 2000?

If thats the case the above is all needed and I would HIGHLY recommend the rubber elbow under the lower intake be replaced as well!!!

The following link provided by fellow member Gus, (thank you Gus), pretty much explains the removal process to access the spark plugs AND goes further to the lower intake and rubber elbow. The rubber vacuum elbow under the lower intake is a KNOWN FAILURE, if it isn't cracked yet it will!

Jaguar vacuum leak p0171 p0174 s-type 3.0

 

just printed it out ready..good info
many thanks
Dennis

 

Cool thread. I am getting ready to do the same thing soon. My 2003 now has 85000 miles on the clock. My question would be should I wait to 120,000 and change the coils as well. For the hassle involved, maybe extending the mileage may be the best strategy. Fooling with the maifold looks like a once in a lifetime "opportunity" if you ask me!

What are your thoughts on delaying teh spark plug change and attending to the coils at the same time? Is it a good idea or a waste of money?

 

If it's running fine I would leave it alone. What I do with my STR is If I am afraid of a certain break down I get the parts to repair it ahead of time. I don't have the coolant hose under the super charger leak yet BUT I have all the gaskets and hoses to do the repair if it happens. And I won't be sad if it never does!!!

If not used the parts will be passed to the next owner of the car. I just look at things long term.

So buy the plugs and gaskets now. Please use stock plugs no fancy miracle plugs. If no problems do the repair at 120K miles. Coils are a maybe. After all my experience with my wife's 2003 Lincoln LS and my 2005 STR I only change coils when I have a problem.

But never swap coils unless just troubleshooting. Many, many people have swapped coils only to go back in to replace them later. Swapping is a crutch but can be useful to identify the problem coils. But I have found if you might only have 1 or 2 or 3 coils giving you problems. The other ones are not far behind. The LS finally just got 8 plugs and 8 coils, 2 valve cover gaskets and 8 spark plug well seals. Runs like a top!!!
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If the o rings are not leaking yet, why bother!

And at he end it is not so much work to get the manifold off anyway.

There might even be a bigger chance of a leak once you replaced the gaskets!

 

They're $3 O Rings why would you not bother?

 

The OP has all the facts on his question (above), what he decides to replace is up to him and anyone else that comes across this thread in the future.

Dennis please let us know what you decided and how it works out.

Thank you

 

Highly doubtful

 

I just bought my IMT rings for $5 and change. I also picked up the elbow for the vacuum leak. They have two different ones, one they think it is for sure and the other one they said to replace while everything is apart. (number 9 + 7).

 

Dumb question here - what exactly are IMT rings? Why do we need them? Where are they located?

What does IMT stand for?

 

IMT= Intake Manifold Tuning

The o-ring is what you are actually changing, not the valve. The o-ring starts to deteriorate and causes a vacuum leak.

https://www.jaguarforums.com/forum/s...ck-pics-49214/

 

I noticed that some radiator hoses are connected to the intake. Do you have to drain the radiator to change the spark plugs?