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Thread: sputter / miss at take off

  1. #1
    cheetahearl
    I have a 454 Mag MPI that just started to sputter / miss / cr#p out under hard acceleration, like when pulling a skier. Once moving the motor runs fine, pulls close to redline with not a trace of the problem.
    Replaced fuel filter with no success, is this a job for a scan tool diagnosis, or would I get lucky with plugs, wires ??
    Thanks for any pointers or experience that can be shared.

  2. #2
    wan hung lo
    The new fuel mix really sucks. It can't take any moisture at all. It also is more prone to shelacking. Maybe try a good fuel additive? Hope you find it soon. The season is short enough as it is!!

  3. #3
    DMOORE
    Might be worth a look at the plugs also. Won't cost to look.
    Darrell.

  4. #4
    cheetahearl
    Thanks for the note..any suggestions on a good fuel additive?
    The new fuel mix really sucks. It can't take any moisture at all. It also is more prone to shelacking. Maybe try a good fuel additive? Hope you find it soon. The season is short enough as it is!!

  5. #5
    Taylorman
    I was gonna post the same question today. Mine did the same thing saturday. Never has done that before.

  6. #6
    wan hung lo
    K100, you want the marine additive. Here is the website. They have a great description of how bad this ethanol mix is for small engines and boats. Especially fiberglass tanks.
    www.k100fueltreatment.com

  7. #7
    cheetahearl
    Might be worth a look at the plugs also. Won't cost to look.
    Darrell.
    Thanks Darrell...good call (the price is right)

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