Well Guys,
The sad tale is now even sadder. Having lived with my xtype's inconsistent starting (sometimes a dozen cranks to get it going) Sometimes it just fired straight away. I am now unable to start at all.
Diagnostics tell me that it may be ACU - Crankcase strobe sensor -
I have tested fuel pump - plenty of pressure. I have replaced fuel filter. I have replaced Crankcase stroke sensor.
I am dealing with an electrical fault and feel the ACU unit might be the culprit - anyone got any ideas ?
The car when it runs goes beautifully.
The only other clue I can give is that sometimes when I am repeatedly trying to start I get loud POP from under the bonnet area. Suppose somewhat similar to a gas escape.
This baby looks like it is going to be standing from now on unless someone know how to rescue one sicko jaguar.
regards
Ray

 

Have you checked the inlet system for any vacuum leaks at the connections between the manifold and MAF sensor?

You may also want to post on the UK forum as most of the members on this site are from North America and have no experience with the 2.1 Litre unit as it was not offered for sale in this market.