Got a p0303 code misfire on cylinder 3 any ideas what to do in this case, and how to get to this cylinder?... and how to identify it??.. thanks for the help.

 

Moved to X type section for better help

Good luck

 

Ok if you looking at the front of the engine from the hood(bonnet). Its the center plug closest to the firewall. You have to remove the intake to get to these plugs. You either have a bad coil or there is oil in your plug well.


Good luck,
The Dr!

 

Thank you very much I appreciate it.

 

In the "How To" section, you'll find some helpful posts for replacing spark plugs.

This thread is a video demonstrating how to remove the intake manifold and change the plugs:
https://www.jaguarforums.com/forum/n...s-xtype-83457/


This thread has good pictures:
https://www.jaguarforums.com/forum/x...nge-faq-48128/


This thread also has good pictures, but one caveat - the spark plugs are incorrectly numbered in a picture. Dr. Dome is correct: plug #3 is the middle plug on the firewall side. But other than this numbering oops, the thread is very helpful.
https://www.jaguarforums.com/forum/x...ted-how-62847/

 

I have *got* to do the plugs with this years service - I skipped doing them last year as not at all sure about taking the intake off :-)

 

Its really not that hard. After taking the air box off, the the front three are exposed. Now take off the plug on the lower part of the throttle body.take off the 2 lines on the top of the intake.

These are shark grip locks. Push down on the outer ring and pull up on the line. Next take off the big hose going from the intake to the valve cover. Now there are 4 10mm bolts.

One on a bracket behind the throttle body about 4 inches down. The next 3 are behind the intake. holding the wire harness. push the harness against the fire wall. The 3rd one is under the bolt on the right side 4 inches down (looking at the intake from the front of the car).

Next take off the wire clip on top and the 2 on the imt valves. Now use a 8mm and take off the bolts going down into the engine. After taking the 7 bolts off, take the intake up and swing towards the front of the car.

Remember all the coolent lines are still attached. And now you have access to the 1,3,5 plugs.

Any questions feel free to pm me.

Good luck,
The Dr!

 

After driving my car with a p0303 code misfire in cylinder #3 for 2 days...I replace the 3 spark plugs under the intake manifold and and didn't do any good...I drive the car for one day had a rough start then went to the store now car won't start.. I try to jump start the battery and all it does it makes 3 clicks it could be a starter problem???...any ideas thanks.

 

I've merged your post from the general tech section with the previous post on this issue, but check the advice provided to see if it will assist in resolving your problem.

regards,
Steve