1994.5 - 1997 7.3L Power Stroke Diesel  

Ready to start looking for oil leak

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Old 10-10-2008, 12:18 PM
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Ready to start looking for oil leak

OK, got the motor all sprayed down from top to bottom with Super Clean, rinsed it off and it is dry. I had a pool of oil in the valley, so I know the leak is from the top of the motor. Before I start it up, I need to know where I should be looking for the leak to start. I have removed the big plastic box from the middle on top of the motor that so I will have a clearer view. This is a pretty serious leak, about one quart every 75 miles, so I was thinking it might be a high-pressure leak i.e. hpop o-rings.

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Old 10-10-2008, 01:05 PM
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There are some plugs on the heads look around them as well as the HPOP. My bet would be under the Turbo or under the turbo pedestal. Almost all of them are o-ring seals. easy fix other than removing turbo.
 
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Old 10-10-2008, 01:20 PM
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Went out and let it run for a few minutes then came back in to see if there was an answer here. Didn't want to let it run for too long and miss something, just was looking for something really obvious. I didn't really see anything, but then it didn't run that long. I was paying especially close attention to those plugs going into the heads and to the turbo pedestal. I'm not sure where the HPOP is located. I have just heard that it was a common place to leak.
 
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Old 10-10-2008, 01:31 PM
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The HPOP is in the valley in front of the fuel bowl. It has some high pressure oil lines going to it. The lines come from the heads where those plugs are.
 




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