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  1. #1

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    Low RPMs at WOT. Help?

    Had a loss of power at WOT and the injector duty cycle was very low.

    Please look at the WOT run at 7:10:00

    I did have a TBM aux tank installed that may have been vacuuming.

    Help??
    Attached Files Attached Files


  2. #2
    desperado's Avatar
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    There was an issue but it is nearly impossible to tell what it was without lambda information. The injector duty cycle was normal because your rpm went down and therefore the calculated fuel injection time was less as a result. Lambda is highly valuable as a tuning and troubleshooting aid.

  3. #3

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    Quote Originally Posted by desperado View Post
    There was an issue but it is nearly impossible to tell what it was without lambda information. The injector duty cycle was normal because your rpm went down and therefore the calculated fuel injection time was less as a result. Lambda is highly valuable as a tuning and troubleshooting aid.
    Thanks Desperado,

    Unfortunately this particular ski had no LA at the time so yes we will probably never know.

    Could have even been something stuck up the pump (or a vacuum produced in the main fuel tank due to the TBM tank therefore fuel starvation) lowering revs and the rpm'saverage = 6094 and IDC ='ed 27% were "normal".

    It was worth asking the question.

    Many thanks,

    Dean

    Just double checked against the rest of the 6094rpm sites and idc was 27% (+/-1%).
    Last edited by Gunna; 09-28-2010 at 06:42 PM. Reason: After thought.

  4. #4
    Bounty Hunter Carlos Thomas's Avatar
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    You got to get that fuel line leaving the fuel cell to not get a kink in it. I reinforced the fuel line so that it can still bend, but it cannot kink up. But I don't think that is your problem in terms of your RPM's.

  5. #5
    Luis Marine's Avatar
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    Wrong thread

  6. #6

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    Thanks all.
    I compared this file to one were I actually ran out of fuel on another ski and it seems similar.
    So end result seems like a kink in a vent hose.
    Dean.

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