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eddietude
06-13-2015, 02:43 PM
Hi all. Finally getting around to firing up the 4D55 I have. Does anyone know which of the parts of the IP need to have power for the thing to run? I know the shut off solenoid does, but there are some other wires coming out of the IP that may need to be powered to let it run. Any help is greatly appreciated.

Thanks!

TOASTY
06-15-2015, 07:41 AM
Just the fuel cut off solenoid needs to be actuated to run, the rest are for gauges basically.

eddietude
06-15-2015, 08:28 AM
Thanks Toasty. That's what I thoiught but I couldn't get it to fire up....

TOASTY
06-16-2015, 10:06 AM
Are your lines bled up to the injectors? As long as it's primed to the top and you've got a good cranking speed it should fire right up above 70 degrees without operating glow plugs.
I thought my IP was no good at first too because i had a slow starter and it wouldn't wake up, the motor would just soot like crazy while cranking.