Jaguar Repair Problems? Ask a Jaguar Repairs Expert.
I am sorry to hear you are still having starting problems. What is the fuel pressure at now? Your vehicle has 2 fuel pumps primary and secondary pumps. When the secondary in tank pump is replaced you need to be careful not to drop any dirt in the tank and the filter should be replaced.
The fuel pressure regulator is on the back of the fuel rail. A failed regulator can cause no start but it is not common. The fuel pressure regulator will have a vacuum line connected to it. Pull the vac line and make sure its not leaking fuel out of this port. The regulator is controlled by engine vacuum.
Also how long does the vehicle stay running? can you get it to run by spraying brake clean into the intake.