Engine Crank but wont start

[phihac0123]

Hi i have an issue with my Z (1990 300zx TT), i have a 2 step lunch control and i tried it out on my Z but its was doing its thing then a backfired then died and since then it did start twice but for like 5 second and the RPM gauge was going crazy. i had the timing belt change september 7 2016 so i dont think i could be the timing belt, it has fresh new spark plugs in and because the engine did start i know its getting fire. i did test my fuel pump and its running perfecly but now i am lost again so i need some help.

[RED_DET]

Remove the launch control .... Just because the belt was changed, doesn't mean it didn't jump timing.

[phihac0123]

The thing is the lunch control came with the car and i dont know how to remove it or where it is on the car :/

[RED_DET]

Normally a program built into the ECU.

[phihac0123]

Thats what my friend told me but when my car gets tow over to my house ill tcheck the timing belt.

[phihac0123]

And how do i know if my timing belt jump timing

[RED_DET]

You would have to check the timing marks vs top dead center. Going to be a lengthy process, since you will have to access the belt behind the cover.