Ron79

Didnt fire up the engine for almost a year. Try firing up to no veil, change new air filter, clean the fuel filter and change the elements, change a brand new fuel pump and spark plugs. Still cannot fire up till my battery flat. Change new battery, test if the plugs have any current which they have.
Did all still the same, crank but couldnt fire up.
Finally, i change to an old ECM which was previous have fault which to my surprise, it might to fire up and got the engine running , sluggish and chocking but after 30 sec of running it dies down. continue to fire up which it could but dies down.

Any1 of you guys have the same problem as me?
I need help!
Any comments is welcome.