Hi
This is my first post on the forum and to be honest I'm at a loss.
In September of 2021 I bought a Jaguar 2006 Xtype 2.0d it has 150,000 miles on it and is a little rough around the edges, but ran well flew through the mot and was...... cheap.
So a few months after buying it it developed a issue of running realy rough at idle when first started ( like a missfire ), this more or less clears up when the car warms up a few mins later.
Now when I say runs rough, i mean its awful.
So this is what I have tried so far :-
A good service Oil, filter, Fuel filter and air filter ! Same fault !
Ive run both redex and millers through for a few hundred miles ! Same fault !
I removed the intercooler pipe under the egr to check for leaks and break cleaned the map !! What a lovley job that was....NOT ! not too much turbo snot in the pipes : Same fault !
The egr is blanked I've run it fitted and not !! Lots of black smoke without !
I brake cleaned the Maf as a precaution : same fault !
I recently did a leak test ( when cold ) firstly noticed a lot of bubbles in all pipes ( i thought this might be my ebay tester not sealing )
the test showed I had a faulty injector.... like realy faulty ! I sent the injector of to get it serviced but was told it was shot ! so got a refurb !
I have fitted it ( not coded yet ) but the same fault is still there !
I carried out another leak test after fitting the new injector this time when the car has warmed up !! ( no or minimal bubbles in the lines )
the new injector leaked back half the amount of the remaining 3 original injectors !
Before I dig in anymore I thought id rack the brains of fellow x400 owners...
I'm thinking maybe give the other 3 injectors a go in the ultrasonic !
I'm still curious on why so many air bubbles in the lines when cold ! Anyone any pointers where to look for an air leak, its got to be somewhere on top right ?
Also if the egr is iffy ( I know this can cause rough idle ) would this show if the egr is blanked ?
Ive never had a glow light on or limp mode !!!
I hope someone can help out here, its only going to be so long and the petrol, matches and the marshmallows come out 🙂
Thanks in advance
Dave
