Updated oil leak
Lead Driver
Joined: Sep 2010
Posts: 7,793
Likes: 50
If you have oil running down the back of the engine but the valley is dry, those plugs are the likely cause. They are located in the back of the head, hidden from view by the uppipe. There should also be plugs in the front of the heads. For some reason all the ones we have had to fix at work have been rear plugs.
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Senior User
Joined: Dec 2010
Posts: 411
Likes: 0
So where would an oil produce pretty clean oil dripping down to the TC, it seems like a leak at the CAC boots would have a hard time doing this as it would be pretty dirty. Any one have any other suggestions
Because racetruck
Joined: Apr 2007
Posts: 2,786
Likes: 104
From: Monterey Bay, CA
Its the EBPV piston leaking oil at the pedestal. Here's what you need: Riffraff Diesel: Exhaust Backpressure Valve piston rebuild kit
Cargo Master
Joined: Aug 2009
Posts: 2,137
Likes: 13
From: Glendive, MT
At work they are in delivery vans so removeing the doghouse makes it easy. On our trucks, I would think, remomoving the uppipe would be the easiest way to get them. I would be darn sure to use a mirror or camera to verify they are the culprit before going through all that work.
Lead Driver
Joined: Sep 2010
Posts: 7,793
Likes: 50
At work they are in delivery vans so removeing the doghouse makes it easy. On our trucks, I would think, remomoving the uppipe would be the easiest way to get them. I would be darn sure to use a mirror or camera to verify they are the culprit before going through all that work.
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Senior User
Joined: Dec 2010
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Its the EBPV piston leaking oil at the pedestal. Here's what you need: Riffraff Diesel: Exhaust Backpressure Valve piston rebuild kit
I actually was looking at that kit last night and all I could think about was that I just had everything out of there to put the plenum inserts boots and HPx in and it makes me wanna just have a drink.....
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Senior User
Joined: Dec 2010
Posts: 411
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haha, yea I'm sure it gets easier, even since the last time i pulled the IC pipes it got easier to do the same thing...even though Im still sore from kneeling on the radiator supports to be able to reach everything. I guess it'll be an excuse to pull the turbo and put in a WW...
I can run for a while w/o doing anything right?
I can run for a while w/o doing anything right?
Laughing Gas
Joined: Aug 2009
Posts: 1,192
Likes: 7
From: Belgrade, MT
Knees
As far as the sore knees go, my wife bought me this for xmas, might be the best gift I have ever gotten.
REL Stapleton Foldable Topside Creeper — Model# 1-00020 | Creepers | Northern Tool + Equipment
REL Stapleton Foldable Topside Creeper — Model# 1-00020 | Creepers | Northern Tool + Equipment
Because racetruck
Joined: Apr 2007
Posts: 2,786
Likes: 104
From: Monterey Bay, CA
Okay gang since the OP has received so many different diagnoses, I am going to point out where I came up with my conclusion and why it isn't the pedestal to turbo o-rings or the pedestal to engine block o-rings.
In the OP's picture which I copied and highlighted, you can see that there is no oil on the pedestal where it meets the turbo. Therefore, those upper o-rings are not leaking. Additionally, you can see oil around the EBPV piston and surrounding area on the pedestal. Since oil doesn't travel up, its not the pedestal to block o-rings. Therefore, its the EBPV piston leaking. All that seals that piston is a fiber washer that leaks eventually.
Now, in order to repair that leak, the pedestal has to come out so the o-rings should be changed anyway. Here's what you need: Riffraff Diesel: Exhaust Backpressure Valve piston rebuild kit
It includes the pedestal o-rings so you should be all set
In the OP's picture which I copied and highlighted, you can see that there is no oil on the pedestal where it meets the turbo. Therefore, those upper o-rings are not leaking. Additionally, you can see oil around the EBPV piston and surrounding area on the pedestal. Since oil doesn't travel up, its not the pedestal to block o-rings. Therefore, its the EBPV piston leaking. All that seals that piston is a fiber washer that leaks eventually.
Now, in order to repair that leak, the pedestal has to come out so the o-rings should be changed anyway. Here's what you need: Riffraff Diesel: Exhaust Backpressure Valve piston rebuild kit
It includes the pedestal o-rings so you should be all set