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  1. #1

    Some spark plug advice please

    Hi, as mentioned in tanother thread, I got the SL780 running OK by taking the greay wire off and I now need to do some troubleshooting to find the reason for it being in limp mode.

    While it was running I did some carb tuning and I could'nt get it to "brubble" going rich and I don't want to go too lean either, can the experts please judge the colour of this spark plug, all are similar. Would you suggest I do more tuning to go a bit leaner or is this ok ? Full speed is around 68 Km/h.

    Regards.
    Last edited by martinv; 10-20-2007 at 04:12 AM.


  2. #2
    Can't seem to get the picture displayed !
    Last edited by martinv; 10-20-2007 at 04:20 AM.

  3. #3
    Here goes again !
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  4. #4
    Moderator beerdart's Avatar
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    How does the plug look after WOT plug chops?

  5. #5
    This was from a WOT plug chop - I swopped this plug on the water to save it. It is not new, has about 12 hours on it.

  6. #6
    Moderator beerdart's Avatar
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    Quote Originally Posted by martinv View Post
    This was from a WOT plug chop - I swopped this plug on the water to save it. It is not new, has about 12 hours on it.
    Run the boat at wide open throttle and pull the lanyard. Then remove the plugs and check condition. This will give you a plug reading for the high speed circuit. Reading the plugs after idling does not tell the story of the high speed circuit.

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