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  1. #1

    97 gp1200 oil question

    Ok so i was breaking in a new engine running 32:1 mix went to change plugs cylinder 1,3 plugs were covered with oil number 2 was clean looked like I just took it out of box am I correct in wording that cylinder 2 is not getting oil. What should I be looking for to correct this. Carbs were just rebuilt with engine from a very good shop.


  2. #2
    Yamaha artisan Cutlass's Avatar
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    Is it oil injected and premixed (for breakin) or just premixed?
    If its just premix, then start investigating #2 carb and cylinder closely. Check the compression. Then maybe pull that number 2 carb apart and see if something isn't right.
    Stick a bore scope in each spark plug and have a look (or pull the head off and look). See if the piston wash is evident and if it looks rich or lean.

  3. #3
    Quote Originally Posted by Cutlass View Post
    Is it oil injected and premixed (for breakin) or just premixed?
    If its just premix, then start investigating #2 carb and cylinder closely. Check the compression. Then maybe pull that number 2 carb apart and see if something isn't right.
    Stick a bore scope in each spark plug and have a look (or pull the head off and look). See if the piston wash is evident and if it looks rich or lean.
    its had a block off kit installed I will check these things and get back to you

  4. #4
    Yamaha artisan Cutlass's Avatar
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    Also maybe look for an air leak somewhere in the number 2 cylinder...intake, carb, base gaskets? maybe the spark plug was loose and leaking air?

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