Help please. x type 2004, 2ltr diesel. 100k miles on clock. car starts, runs ok, good mpg etc. problem is accelerating or simply under load, betwwen 2250 rpm - 2750 rpm enine seems "chocked and pulls" then really heavy black smoke from exhaust any ideas ?

 

You may want to post your question on the UK forum as most members of this forum are from North America. Jaguar never offered a diesel variant of any vehicles in this part of the world.

Have you changed the fuel filter recently?

 

3 general causes of black smoke on a diesel:
-Injection pressure is too low
-Air leak- not enough air getting to the combustion chamber- this could be boost system related also
-Too much EGR being used for some reason


I don't know the specific idiosyncracies of the 2.2 litre diesel in the X type

 

Another very common oriblem (with excessive black smoke as a by product) is dirty and sticking turbo. See link and read all the links in the posts.

https://www.jaguarforums.com/forum/x...-turbo-189592/

 

Hi John is the black smoke continuous or does it clear after a few seconds?

 

the blacksmoke does just lst for the first few seconds of accelaration and then clears for a while until the engine is putunder strain or through accelaration

 

Hi. Might not be the same problem but I had this with a PUG diesel and the cure was to put a fuel system cleaner in the tank and take the revs up to the limiter for e short while. (lots of smoke) every couple of days. This cured my car. If yours is an auto you may have a DPF filter and this could be your problem.