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  1. #1

    Join Date
    Feb 2010
    Location
    ausralia
    Posts
    44

    Unhappy Down on rpm milky under oil cap

    Hi all need feed back l took my ski out to day couldn't get it to rev past 7550rpm it should rev to 7920 after an hour riding it started to surge wouldn't rev past 6500 l check supercharger belt is ok all clamps ok could it be plugs l all so have condensation under my oil cap is that normal it's milky under oil cap check dip stick it's clear l worried it could be a cracked head ski has 45hrs on it......


  2. #2

    Join Date
    Mar 2008
    Location
    Tauranga, New Zealand
    Posts
    66
    Quote Originally Posted by dobbo View Post
    Hi all need feed back l took my ski out to day couldn't get it to rev past 7550rpm it should rev to 7920 after an hour riding it started to surge wouldn't rev past 6500 l check supercharger belt is ok all clamps ok could it be plugs l all so have condensation under my oil cap is that normal it's milky under oil cap check dip stick it's clear l worried it could be a cracked head ski has 45hrs on it......
    All the symptoms and same hours I had. I noticed small amounts of milk under my oil cap for a couple of races. Kept changing out the oil, thinking I was just getting a bit of condensation. In my last race I noticed high fuel consumption and a drop in top speed then I lost oil pressure. Reakon there is no other way to check without removing the head. If it is a cracked head and you catch it early enough you could avoid further engine contamination.

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