car won't start
 

Hey there
I've recently took my Lancer ck2a for a ride after I upgraded piston rings and other parts like head gasket etc...
I've just went for like 2km and then it stopped, seems like it lacks fuel, I checked if fuel pipes and fuel pump and filter are working well, everything is good, sparks are new distributor is working. I just crank it and it doesn't go over 300/400rpm and stop, even if I push hard on gas pedal.
any solutions?
my car engine is 4G15 SOHC carburetor.