3sgte back firing


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.


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.
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.


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.