99 3.2 XJ8 stalling problem

[jason1883]

Hello everyone
I have a 99 3.2 XJ8. The car has been parked on the drive for the last 10 months or so and developed a fault while sitting there. The engine seems to start up fine but when you give it some gas it doesn’t seem to rev past 2000rpm and struggles to get there, it takes about 20-30 seconds (that’s with the foot to the floor). Then all of a sudden it shoots to red line. When you give it some gas again either you get same problem or it stalls.
Have any of you guys ever encountered this problem?
Your help would be much appreciated.
Thanks
jason1883

[Tame Technician]

Could be a huge number of things from that description. Sticky throttle body or air leak most likely.

But last time I had that exact same symptom it was contaminated fuel, car had stood for a year or so and was fine before hand, customer jump started it and it ran funny, he thought he had fried the ECU, but there was water at the bottom of the fuel tank, possibly condensation from the winter, but it was defiantly water mixed with fuel we had coming out the injector rail. See if you can drain the tank and put a gallon on fresh super unleaded in it and try again.

I think there's a shraider (tyre type) valve on the fuel rail, you can catch some fuel there and see what it looks/smells like.