Hi all,

Newbie to the forum. I was hoping someone out there could help me with a recent problem I'm experiencing with my R53. In the last 2 months i have had the number 3 spark plug pack it in twice after reving the car to 5,500rpm in third. The miss fire starts slowly, but after 10 k's the engine runs on three cylinders with the engine light coming on. I suspect the coil but would like to know anyones opinions. Thanks in advance