7.3l Oil leak - Ford Powerstroke Diesel Forum
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Old 07-09-2008, 07:49 AM
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7.3l Oil leak

I have an 03 that just developed a real fast oil leak after a 3400 mile round trip from GA to TX. It waits till the engine starts to warm up and then comes gushing out of what looks to be the rear main seal on oil pan. I'm not too familiar with the engine, but is there a seperate seals back there? I took off the dust cover to make sure thats where its at and it seems like it is so. I changed the oil while in TX so its clean oil coming out. Any suggestions ideas? I'm going to start taking the oil pan off, I just want a second opinion. Thanks, David
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Old 07-09-2008, 07:53 AM
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You may want to look at your hpop lines going to the heads. They leak and run down the valley pan to the back of the intake. There it runs down between the block and trans. Rear main seals are usually don't leak. Also check around the turbo pedestal. Good luck!
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Old 07-09-2008, 07:55 AM
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By the way, you don't have to pull the pan to change the seal! You have to pull transmission and the seal is in a separate housing on back of block!
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Old 07-09-2008, 08:01 AM
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Y'all are quick. I went back to double check and noticed some oil under the hood then came back here and already had a couple hits. It looks like it is on top of the motor somewhere. thanks.
David
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Old 07-09-2008, 11:10 AM
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Yeah you can't just pull the oil pan off on these anyway. Motor needs to come out for that.

Is there oil in the front of the engine valley? - HPOP 0-rings
In the rear of the valley? - Turbo pedestal

Best thing to do to diagnose it is get up in there while it is running with an extendabe mirror and a flashlight. Look all around the HPOP and the turbo pedastal. I'd bet dollars to donuts that's where you're leaking from.
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