I'm starting to loose faith with my 2010 XK which I brought 6 months ago as I seem to be plagued by a recurring issue with a misfire and reduced performance message.
The dealer I purchased it from gave a 3 month warranty and used a local garage to do all their warranty work I thought it was a safe bet. When the problem first happened they had the car checked it out deleted the faults and returned it saying "It seem ok" I will add that even thou it was misfiring and running rough when I booked it in by time I took it to the garage it was running perfect again. So weeks went by with no problem but I hardly drove it in that time then we set of on 300 mile round trip to Norfolk got there no problem set off home and the misfire is back, pulled up plugged in the Topdom cleared the faults and away we go only for it to return 20 mins later. Stopped at a service station contemplating the AA to start it up and drive 120 miles home with no problem. Booked it back in at the garage to be told there's nothing wrong so left it with them for a few days to run about in till the fault reappeared which it didn't all they manage to do was send it back looking like the back of a farmers landrover so it won't be going back to that place again.
After a few weeks it reappeared the dealer now long past my warranty period suggested a local Jag specialist to do a diagnostic check which they said showed, coil pack 2 faulty and injector 6 faulty and a quote for £1100 to sort. the dealer suggest I return the car so their in house mechanic can do the work and threw in a new set of plugs and it wouldn't cost me. Great we finally sorted but no a week later and it's miss firing again and I had only drove a few miles. I've contacted the mechanic who said he will have a talk with his boss as he wants the car right but I think the boss is losing interest as I've had the car 6 month and it's looking like an expensive job.
Has anyone had similar misfire problems or any idea as I now own a very pretty ornament on the front which I just don't trust to drive anymore.
Pete.