I NEED HELP, I HAVE A 95 7.3 DI AND I CHANGE A INJECTOR THE OTHER DAY. AND REMOVE ALL THE OIL THAT LEAK INTO THE CYLINDER , I GOT THE MOTOR TO RUN FOR ABOUT 5MIN THEN I SHUT IT OFF TO REPLACE THE VALUE COVER. WHEN REPLACE THE VALUE I HEAR OIL DRAINING BACK INTO THE PAN AND WHEN E TRY TO RESTART THE TRUCK THE OIL PRESSURE FOR THE INJECTOR WILL NOT HOLD IT PRESSURE AND IF IT START I HAVE TO HOLD THE PEDAL ALL THE WAY DOWN TO THE FLOOR TO KEPT IT RUNNING.

 

Possibly you damaged the injector O-ring seals on installation.
Rog

 

I PULL THE INJECTOR BACK OUT TO CHECK AND THERE NO DAMAGE TO THE O RINGS. I PULL THE HPOP COVER OFF AND HAD ONLY A LITTLE BIT OF OIL THAT DRAIN OUT, LESS THAN 2 OZ