Arrghh! Oil leak... - Ford Powerstroke Diesel Forum
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post #1 of 3 Old 06-14-2012, 08:33 PM Thread Starter
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Arrghh! Oil leak...

Been tracking down a slowish oil leak that's getting worse. Coming from the valley area, going across to the passenger drain, and coming down into the start and TC cover plate.

Cleaned the valley dry, and idled it. Nothing. Drove it several times a few miles. Nothing. Drove 25 miles tonight, filled the valley enough to leak. Seems to be at the front driver's corner of the head. The front corner of the head is wet back to the passenger intake horn and under the HPOP is wet. But the top three HPOP ports are dry, and the oil feed hose to the head is dry.

May be seeping from the hose inlet at the head, or that sensor at the front corner of the head. What is that sensor? Might be that bottom plug at the bottom of the HPOP, but I can't get under it to see it.

Is there an oil port under the intake horn?

Does the fuel bowl have some sort of oil feed?


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98 Jeep TJ - wheeler

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post #2 of 3 Old 06-15-2012, 11:51 AM
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The sensor is the Injection Pressure Control (ICP) sensor and the connection is o-ringed as are all the hose-to-head connections and HP oil galley plugs for the "other cylinders" on the same head plane. Also the HPOP gasket could leak, Injection Pressure Regulator (IPR) valve, Engine Oil Temperature (EOT) sensor are also in the area. There are no oil feeds to the fuel bowl. Cheers!

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post #3 of 3 Old 06-15-2012, 12:11 PM Fanatic
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Definetly check the ICP sensor o ring, one of mine was leaking and the oring was deteriorated and cut...

1995 F250 Ext cab Long box 7.3 DI Turbo Diesel 5 spd 308,000 mile TS 6 position chip.....Is currently without an engine

1996 F250 Ext cab Long box 7.3 DI Turbo Diesel Auto 210,000 mile Stock except for the wheels.....Looks like a crushed beer can at the moment :/

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