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spark plug

  1. DIY: Ionic Sensor resistance?

    E60 M5 and E61 M5 Touring Discussion
    Hey all, I'm trying to diagnose a cylinder misfire and I've taken the coil out from the bad cylinder and measured it's resistance, and it reads 0.5ohms on the primary and 65K ohms at the spark plug end. This seems reasonable to me though I haven't measured an assumed good ones spark plug end...
  2. cap and rotor issue

    E34 M5 Discussion
    Hey all, i'm trying to change out a badly worn rotor and distributor cap ( no wonder its been taking longer and longer to start the car and some performance degradation!), but, I can't get the 3 screws/bolts off that hold it on ( 3mm)!!!! Since it has such a small opening ( 3mm) I feel like...
  3. Best maintenance parts

    E34 M5 Discussion
    I was searching for part numbers to no avail, and I though maybe we should just start a thread for stuff like plugs and caps and rotors and stuff. Pelican has 2 sources of cap&rotor for the M5, a bosch and a bremi. Cap: Bosch 12-11-1-725-070-M14; Bremi 12-11-1-725-070-M18. Rotor: Bosch...