well i took on a project to get this motor to run and complete clean of the fuel system everytime i got to another point i'd try to crank the motor .
i eventually got it down to the injectors themselves and took them apart and cleaned on re-assembly tore one of the o-rings in the injector and had to run around to find this specific size o-ring.
could not locate but did use a substitute in its place.
put motor back together and it runs
later found out i saved thousands of dollars on replacement of injectors.