Hello Need some help. Yesterday we change fuel filters on fuel Injectors and compressor small filters. After assembly fuel injectors and compressor try to star motor but it not start.
after some attempts I seen fuel coming out of the exhaust on the prop.

Connect lap top and review pressure compressor show 300 psi while cranking and lost the pressure imediatelly after stop cranking. I know at iddle pressure mut be at least 850 psi but do not know while cranking.
Also in other motor the pressure is reduced gradually but in this motor is imediatelly. Could be a leaking injector.?

when you push the start the electric pump pressurize the system but after the 10 second the pressure should be hold but on this motor lost pressure imediatelly could this cause the motor do not start? The fuel on the exhaust could be coming from a fuel injector leaking !

Also on the fuel return hoses from compressor not fuel if electric pump is pressurized and while cranking. Is this normal?

Appreciatte any support.