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Thread: Idle Fuel smell

  1. #11
    Joe (Moderator) joecar's Avatar
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    Quote Originally Posted by statesman View Post
    It's a mis-labeled table. Those numbers are in references pulses. Each reference pulse is 90 degrees of crankshaft rotation. Higher numbers mean the EOIT is later, lower numbers mean the EOIT is earlier. Most people can't figure it out because there's an offset. Someone did some physical testing over on the HPT forum a while ago (I think it was Bluecat) and the results of the test showed that it is reference pulses and that there is an offset.
    Which valve event is the zero reference...?

  2. #12
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    Quote Originally Posted by joecar View Post
    Which valve event is the zero reference...?
    The zero reference point is not a valve event... it's a crankshaft position relative to the tdc position of the cylinder being fueled.

    Here's the thread on Bluecat's bench test...

    https://www.hptuners.com/forum/showt...OI-fuel-timing

    Have a read and let me know if you're still lost.

  3. #13
    Joe (Moderator) joecar's Avatar
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    Quote Originally Posted by statesman View Post
    The zero reference point is not a valve event... it's a crankshaft position relative to the tdc position of the cylinder being fueled.

    Here's the thread on Bluecat's bench test...

    https://www.hptuners.com/forum/showt...OI-fuel-timing

    Have a read and let me know if you're still lost.
    Ok, thanks, I'll read carefully.

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