Results 1 to 3 of 3
  1. 01-25-2020, 04:48 PM #1
    fatboy9nc
    fatboy9nc is offline
    Member
    Join Date
    Mar 2019
    Location
    Durham, NC
    Posts
    90

    spark plug corrosion

    Sorry for the newbie post but what is causing this corrosion on this spark plug? It's a 04 yamaha 200 ox66.

    Thanks
    ScottieIMG_1156.JPGIMG_1157.JPG
    Reply With Quote Reply With Quote
  2. cwilt
    cwilt is offline
    Member cwilt's Avatar
    Join Date
    Jan 2007
    Location
    Homestead, FL
    Posts
    11,277
    #2 01-26-2020, 06:26 PM
    Is your water pressure sensor leaking (or temp sensor) when running? It was on mine, it would drip down on top of the head and the force from accelerating pushed the water aft, and puddle up in the spark plug holes.
    2008 Ranger 178VX
    150 Yamaha V-max

    GO Fins!!!
    Reply With Quote Reply With Quote
  3. fatboy9nc
    fatboy9nc is offline
    Member
    Join Date
    Mar 2019
    Location
    Durham, NC
    Posts
    90
    #3 01-26-2020, 07:40 PM
    I'll have to check and see. This was cylinder #4 and all the others were fine though....
    Reply With Quote Reply With Quote
« Previous Thread | Next Thread »