3sgte back firing

Discussion in 'Rolling Road Section' started by Aronles2345, Aug 7, 2014.

  1. Aronles2345

    Aronles2345 Fresh Recruit

    I got a turbo 3sgte that is sputtering on acceleration. The car also sputters when I hold it at 4 grand or any high rev. It sputters than accelerates. Does anybody have any idea what this problem is from.
  2. dac69er

    dac69er Super Moderator

    any engine codes? does the car run ok under 4k rpm? any other issues on idle or low rpm?

    i would suspect ignition or map sensor to begin with.
  3. garry goodall

    garry goodall Paid Member

    i had this with my mr2, it was a tooth out on the cambelt, the problem was the bottom cover that is used to mark TDC was off so everything looked ok.

    if you wanna pursue this as a potential problem take your rocker cover off, the cam shafts are marked with the head for the timing, also take a spark plug out and use a screwdriver to check TDC instead and compare it with the camshaft markings.

    took me a month to figure all this out.
  4. Jay

    Jay Admin

    Could be as simple as a bad sparkplug, if you don't see any fault codes it's worth removing and inspecting plugs, leads, rotor arm and distributor cap to check their condition.

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