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Thread: no fuel inj pulse while cranking

  1. #1
    Potential Tuner
    Join Date
    Nov 2010
    Posts
    3

    no fuel inj pulse while cranking

    i have zr1 engine swapped into an older c10 truck, tuned previously on the car the pullout came from, i have a standalone harness. i have disabled the starter, and vats under os and system tabs and done complete write. has spark but no fuel injector pulse remains on 0.00m/s. the map, baro and boost sensor are at 99kpa which is correct for my elavation, i have crank and cam rpm while cranking. fuel pump is coming on but i have no light on a noid light, i do have voltage at all injectors but no ground pulse.
    please help i have attached the tune file.
    thanks zr1 file no codes.hpt

  2. #2
    Advanced Tuner
    Join Date
    Feb 2020
    Location
    Metro Detroit Area
    Posts
    263
    I would suspect a cam sensor trigger issue. Maybe look into that.

  3. #3
    Potential Tuner
    Join Date
    Jun 2020
    Posts
    6
    Any update on this? I?m dealing with a similar issue