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Engine goes flat at full throttle underload

Discussion in 'Turbo Tech Questions' started by Cheekymonkeyconcepts, Oct 28, 2018.

  1. Cheekymonkeyconcepts

    Joined:
    Oct 28, 2018
    Hi guys and girls ive been building a turbo motorcycle and have just got it up and running all the fueling has been setup at correct afr but under load at full throttle it loses power and the revs just fall flat and stop pulling is this a sign of not enough ignition retard cheers in advance
     
    Cheekymonkeyconcepts, Oct 28, 2018
    #1

  2. Bad Medicine Racing

    Joined:
    Jun 4, 2007
    Could be several things. Ignition not strong enough, plug gaps way too wide, weak valve springs, just to name a few.
     
    Bad Medicine Racing, Oct 28, 2018
    #2

  3. Cheekymonkeyconcepts

    Joined:
    Oct 28, 2018
    Im using a aem 42000 volt coil and double valve springs so that side of things should be ok the engine im using uses cdi fixed advance and at max advance its extremely high but didn't want to start changing things of it wasnt the issue thanks for your reply
     
    Cheekymonkeyconcepts, Oct 28, 2018
    #3

  4. B E N

    Joined:
    Nov 22, 2016
    What is your plug gap?
     
    B E N, Oct 28, 2018
    #4

  5. Cheekymonkeyconcepts

    Joined:
    Oct 28, 2018
    0.4mm
     
    Cheekymonkeyconcepts, Oct 28, 2018
    #5
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