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  1. #1

    Default Tune up complete - Still takes 2-3 attempts before engine starts...why?

    1999 K1500.....replaced plugs, wires, cap & rotor....engine starts after 2 or 3 attempts. Any ideas what else I can do to improve starting?


  2. #2
    Sr. Engineer
    Join Date
    Oct 2010
    Indianapolis, In


    What constitutes an attempt? 2 or 3 seconds a try or 5 to 10 second a try? when you turn the ignition on are you able to he the fuel pump run for a few seconds? I believe the computer turns on the fuel pump relay initialy, for it to continue to opperate it needs to see the engine cam/crank sensor being triggered. You may not have enough fuel pressure at start to fire it.
    2000 GMC YUKON SLT, 5.3L tow pkg, G80 rear/w 3.73 gear

  3. #3


    Thank you dpeter. That seemed to do it.

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