5sfte wont start, Help guys Options

[xxFROZENxx]

hey guys my car wont start any more after i finish servicing it.. took it for a run and the just shutdown and stored on me...( in 2nd gear).... it still cranks but wont fire up...

i have tested it for spark and still spark in the leads,got a volt meter to test battery, ignition, distributor and they still have voltage....
i thought it could be my timing belt... so open up and still good no snap or cut to the belt..... what can it be guys????

could it be a blown head gasket? or cooked Ecu?

[xxFROZENxx]

took my ecu out and tried it on my friend celica.. it started his car..ecu ok....
so if ecu is ok, starter still click, distributor still sparks with spark inside, injectors swap back to stock standard and fuel pump pumping... what else could go wrong?

i tink my engine is gone....
help guys