Rebuilt 7.3 Will Not Start.. Please help
Post Fiend
Joined: Nov 2007
Posts: 9,549
Likes: 14
From: Payson, AZ
EBPV Actuator = Exhaust Back Pressure Actuator. It is built into the turbo pedestal and opens and closes the EBPV in the turbo exhaust outlet.
IPR connector plugs into the black plastic IPR solenoid plug below the the letters IPR.
Turbo pedestal. The EBPV actuator connects to the white plastic plug.
The connectors that plug into these look the same and have a wire safety clip to hold the connector in. I think they are the same color, that is why they are easy to reverse. IIRC the IPR harness splits off right behind the harness for the ICP (Injector Control Pressure) Sensor on the front inside of the drivers side head..
Post Fiend
Joined: Nov 2007
Posts: 9,549
Likes: 14
From: Payson, AZ
Yes, if they are swapped the IPR will not let oil flow to the heads. It will remain closed. A member hear had accidently swapped those two connectors and no start.
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Junior User
Joined: Oct 2007
Posts: 82
Likes: 0
OK I still need help. I tried switching the wires on the IPR and the EBPR and the IPR wire would not reach anywhere near the turbo pedestal. I did plug in the
EBPR wire into the IPR and pulled the sensor out of the oil rail and there was no oil in it When I switched the wires back and cranked it over the oil rail filled up with oil but as soon as I stop cranking the oil drains out of the oil rail. Should this happen? I get absolutely NO smoke out of the tail pipe. Help.
EBPR wire into the IPR and pulled the sensor out of the oil rail and there was no oil in it When I switched the wires back and cranked it over the oil rail filled up with oil but as soon as I stop cranking the oil drains out of the oil rail. Should this happen? I get absolutely NO smoke out of the tail pipe. Help.
Post Fiend
Joined: Mar 2007
Posts: 26,966
Likes: 50
From: Texas
Time to find out where the oil is going. No signs of leaks on top of the motor? If you pull an oil plug on the passenger side oil rail in the head, do you have oil on that side? How's the oil level on the dipstick? Any sign of oil in the bottom of the fuel bowl filter?
If you're losing oil in one rail, I'd pull the valve cover. Make sure the oil rail plugs are installed in that side, then pull the injectors and check the o-rings. If it drains down that quick, I'd check the plugs in the rail to make sure they are in there.
If you're losing oil in one rail, I'd pull the valve cover. Make sure the oil rail plugs are installed in that side, then pull the injectors and check the o-rings. If it drains down that quick, I'd check the plugs in the rail to make sure they are in there.
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Junior User
Joined: Oct 2007
Posts: 82
Likes: 0
OK I am going to check the passenger side oil rail and then pull the valve cover. I dont remember if I took the oil plugs out or not under the valve cover but I will find out. I did put all new o-rings on the injectors and they went in by hand so I will save that for a last resort. Thanks alot and I will reply once I find out anything. Thanks again.
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Post Fiend
Joined: Mar 2007
Posts: 26,966
Likes: 50
From: Texas
Little plugs that screw into the oil rails in the heads. If you take the valve cover gaskets off you can see them. It allows you to drain most of the oil from the rail before pulling the injectors so all the oil doesn't go down inside the piston.
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