I bought an XJ8 a few weeks ago. No problems until now. The engine used to start up first time every time but not since the battery went dead over night. I disconnected the battery and recharged it. The battery was fully charged and the engine turned when I turned the key but it would not start.
I joined a Jaguar site and it was suggested that it could have been the NIKASIL problem. It was .... I got it going by taking the plugs out, squirting a small amount of oil in each cylinder. I put it all back together and after about 30 seconds of trying it burst into life. It ran great for about 5 miles! It then had a warning come on "Engine Stalled" or something like that. I was in a dangerous position on the road and I just managed to park safely never mind read the display. It will not start again, all I get is what sounds like a backfire back up through the throttle body and a refusal to start. It?s not even trying to start. Has anyone got any ideas please?