Hi all i'm new on here so first hello to all. Next I have owned an X5 for 5 years with out a problem, but I also have a 1.9 Z3 which has been in storage for 18 months and I have now taken it out and found out it is only firing on two cylinders. Anyone had this or any ideas what to do? Please dont say the dealers, they quoted £85 just to plug in, thanks.