250 Spark plug help!

Discussion in 'Mechanical - Engine, Gearbox, Exhaust etc' started by Charlie Howard, Jul 14, 2018.

  1. Charlie Howard

    Charlie Howard RSM Club Member

    I remember one of plugs looking odd last time I checked and thought I'd sort it now before they need changing and it's a problem.

    They work as is so not a problem at the moment but something is definitely wrong!

    There's oil in the well which I'm assured isn't really an issue unless a lot leaks but one of the plugs has a bit that loves which means I can't remove it.

     
  2. Which spark plug is it. Has it been misfiring on that cylinder
     
  3. Charlie Howard

    Charlie Howard RSM Club Member

    Standard ones for the 250, I forget the code. No all runs fine.
     
  4. Its probably spilled oil from when the oils been changed or its slight weep from one of the rocker bolts. Dry/clean it up with some tissue and keep an eye on it.
     
  5. Charlie Howard

    Charlie Howard RSM Club Member

    Got it out, still no idea what it is or how it got in there.
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  6. Is it off the bottom of the coil pack?
     
  7. Charlie Howard

    Charlie Howard RSM Club Member

    I thought that but no, all coils look fine and the same.

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  8. That looks to me like the rubber insert of a old spark plug socket. The bit that holds it in place.
     
  9. Charlie Howard

    Charlie Howard RSM Club Member

    None of the others have it, surely they're held in place by the threads?

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  10. matt e

    matt e South East RSM Area Rep

    No when you change the spark plugs with a spark plug socket they have a rubber washer in the socket to grab the plug and when you remove the socket the plug is in the socket
     
  11. Charlie Howard

    Charlie Howard RSM Club Member

    Yeah we thought that too but I bought the sockets new to do the job and the other unused socket doesn't have it in so I doubt it.

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