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Power Strokes
7.3 Tech
HELP! Died while driving, crank no start
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[QUOTE="dsberman94, post: 1448589, member: 12667"] If the idm is bad the injectors won't fire. If the injectors don't fire there will be no oil from the deflector. That's where something to read oil pressure at the oil rails at the head will come in at. But the icp sensor in the hpo rail needs to see 500 psi to tell the idm to activate the solenoid so the injector will fire. There should always be oil at the injector, it's whether the injector uses it or not. When the icp sensor sees 500 psi, the idm will start to fire the injector solenoids and will use the high pressure oil that is already at the injectors. However, in your case you unplugged the icp sensor, when you do this the pcm automatically defaults to 700 psi which is more than it needs to see to tell the idm to fire, so it will. As long as there is oil there, the injector solenoid will activate and use the oil pressure to inject fuel. In your case I do not think there is oil there yet for the injector to use. And I may have given some incomplete info before. For your gauge to read hpo at the heads. You'll need a #5 male o-ring boss to 1/4" jic male fitting. I bought two of these as well as two caps to go on the jic fitting. This way you can just leave those fittings in the hpo rails with the cap on in case you need them in the future. The hose will need the 1/4" jic female on one end and whatever fitting the gauge needs on the other. 5' of hose should be plenty as long as you have a buddy. [/QUOTE]
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HELP! Died while driving, crank no start
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