4-108 Fuel Shutoff

[lonesomewander]

I have just rebuilt a 4-108. Rebuilt pump, injectors, etc. I bought the boat after the engine was flooded so don't have any experience with it running yet. I have a couple of questions. First, I'm not sure which way the fuel shutoff solenoid should be wired. Applying juice to it pulls the lever on the pump towards the back of the engine. Should power be applied to it any time it is running or does applying power to it kill the engine? I obviously need to get this right before I can bleed the thing. I tried bleeding it both ways but couldn't get fuel at the injectors. I decided it would be better to figure out which way is correct before cranking the engine any more. I was able to get clean fuel out of pump side vent. I'm also curious about the fuel return line at the top of the CAV filter. If I pump the lift pump manually, fuel eventually comes out this line. What controls the pressure built up in this part of the system? Should I temporarily block this off while trying to bleed it? Any advice would be very welcome. Thanks.