Christina-JCW Posted August 10, 2009 Report Share Posted August 10, 2009 Has anyone ever experienced a loose spark plug? (or heard firsthand from another Mini owner?) Starbuck had the Check Engine light come on with misfiring above 3000rpm, and when I pulled the plugs, #1 cylinder was loose. (no torque needed to remove, it turned easily). There was soot on the plug , where exhaust gas leaked past the threads. The other 3 cylinders were fine. Because Starbuck has 75k, I replaced the stock coil with an MSD unit and added Brisk Racing plugs.:idea: (The MSD unit is less expensive than the stock unit). Everything was put back together without any issues. Car works perfectly, light went out, no misfiring, great acceleration.... Thanks! Starbuck - 2006 MCS: JCW Engine and Suspension, Alta: 19mm Rear Anti-Sway Bar, Rear Control Arms (top & bottom), Rear End-Links, Alta intake hose, Alta Intercooler Diverter v2 Helix:Rear Seat Delete M7: Front Strut Bar, 2% Crank Pulley MiniMadness: JCW Air Filter & Polyurethane rear strut bushings. Link to comment Share on other sites More sharing options...
