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Thread: Another After Start Problem

  1. #1
    Tuner in Training
    Join Date
    Mar 2012
    Posts
    28

    Another After Start Problem

    The engine lights off but then dies. Scan data shows a large first pulse and then drops off too about 2ms. The engine will not hold idle.
    Will not take the throttle, it just dies faster.

    Attached is my current tune and a scan file. Go to the end of the scan file where I made 8 start attempts.

    Wide band data is bogus.

    Any insite would be greatly appreciated.
    Asteroid

  2. #2
    Advanced Tuner
    Join Date
    Jun 2007
    Location
    Finland, Europe
    Posts
    549
    Well, it seems that you have a very small engine indeed. :-)

    I always use metric values and if there's no bug in the software version I'm using, it seems that your cylinder displacement is 0.08194 liters, which is about 5 cubic inches.

    I guess you have 400 cid engine, so just multiply the existing 0.08914 by ten. Then it would be in the right range..

    Note that your VE values may and will probably change automatically when you play with cylinder displacement. Compare them before and after.

  3. #3
    Tuner in Training
    Join Date
    Mar 2012
    Posts
    28
    Wow, I can't thank you enough for spotting that error. I was just chasing my tail all over the place on this. This forum is awesome...
    Asteroid