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912 Oil Change gone bad

in 912 / 914 Technical Questions 12 years ago

  • Re: 912 Oil Change gone bad

    by » 12 years ago

    Hi Steve

    I would probably use the plunger as this is the newer part that is similar to what they have been using on bikes like
    Ducati's for years.

    mark
      
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  • Re: 912 Oil Change gone bad

    by » 12 years ago

    Got it. I'll let you know how it goes after I get the parts. Again, thank you.
      
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  • Re: 912 Oil Change gone bad

    by » 12 years ago

    Mark and Bill: Wanted to let you know I finally installed the new plunger and did the purge procedure and the pressure came right up. Ran the engine and it sounds very good and smooth. I'm debating whether I have anything to really gain by removing the valve covers and checking the tappets. What do you think? Steve M.
      
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  • Re: 912 Oil Change gone bad

    by » 12 years ago

    Checking the valve spring washers has to be a judgement call on your part.

    Personally, based on the very small amount of time you ran the engine with low pressure and the fact that there was no valve noise, I don't think it's necessary.

    Bill.
      
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  • Re: 912 Oil Change gone bad

    by » 12 years ago

    Hi Steve

    Because of the money involved if it is not right, and also the possible implications if it all goes wrong, and the peace of mind when you are thinking about it when you are trying to sleep, and the short amount of time it will take, I personally would check them. Because of the engine noise, it is not always possible to hear every little noise. I wouldn't bother changing the o-rings as they will probably be OK, and if one did decide to leak, then that one can be changed.

    Undo the cap head screw, turn the prop until both valves are closed and then push on the pushrod end of the rocker arm with the handle of a hammer or a piece of wood for a couple of seconds. I can almost guarantee they won't move, but it is worth checking.

    It will take you about 5 mins to do all 4, and that is taking your time.

    I agree with Bill that you probably won't have damaged any of the valve train, but I would check the hydraulic tappets are purged.

    Cheers Mark
      
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