Blow-by causes

[sinner6.0L]

I'm going to tell you right now diesels make a ton of blowby, think about the compression ratio on top of the fact it's making slight boost at idle. You need to have a completely unrestricted CCV mod or it's going to pressurize the crankcase and leak oil out of the damnest spots. I don't believe in CCV mods, I've seen them do some of the weirdest ****.

A compression test can give you an idea if it's a sealing issue. If the compression is good look at a possible turbo seal failure putting boost into the oil drain. Usually that'll put excessive oil in the cac too.

[04cr450]

Yes that is bad smoking like a freight train... In a good tight engine, taking off the oil cap there should be a thin slow constant puff coming out that evaporates 2 to 3 inches from the fill cap... Def. need to look at your engine my friend.

[04cr450]

This is also why i dont have the ccv mod done. I dont want to take chances due to the high compression diesels have risking the ccv being restricted from a kink/freezing in the winter time from condesation at the end of the tubing.. Oil in your cac boots wont hurt anything.. I just take them apart every 3 months or so and clean them.. Never had a problem. Good point sinner

[WarChild]

Originally Posted by southend

Here you go........https://www.youtube.com/watch?v=jscf...e_gdata_player

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Is that normal? ....lol...mine is less than that but I will get a video of it tomarrow and post it up.

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[southend]

Originally Posted by WarChild

Is that normal? ....lol...mine is less than that but I will get a video of it tomarrow and post it up.

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No, that is not normal. Maybe I can get a video also. I disagree with the ccv also, unless it's a huge tube dumping on the ground. Thats how I remember the big trucks. No, ice worries down south. Good info, sinner, i'll remember that.

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[WarChild]

Originally Posted by southend

No, that is not normal. Maybe I can get a video also. I disagree with the ccv also, unless it's a huge tube dumping on the ground. Thats how I remember the big trucks. No, ice worries down south. Good info, sinner, i'll remember that.

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I tube I used is about an inch and a half dumping right to the ground with no filter.

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[WarChild]

Im assuming the only way this can happen is by the turbo seal and piston rings? What else could cause it?

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[southend]

Originally Posted by WarChild

Im assuming the only way this can happen is by the turbo seal and piston rings? What else could cause it?

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A hole in the piston, worst case.

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[dfish1247]

Those are the main ones, but seals or o-rings around a valve or the injectors can as well. Although the injectors would dump raw fuel in the crankcase and swell the oil. Have you been checking if your oil level is growing?

My ccv is a 1'' hose run down to the fuel tank, I made the entire run downhill with about 2% grade decline. I was very liberal with the zip ties to try and keep the hose from sagging over time and causing a dip, they are about 3'' apart the whole run. No filter or anything, just open hose and I haven't had one bit of smoke or oil come out of it. Granted I only have 56k on my truck, but still.

This whole condensation freezing thing is a load of crap unless you have an upturn or the hose was just slapped in and half azzed secured with a giant sag in it. Do you guys know how much cond. it would take to actually plug the hose and if any does get in there, the engine heat will slowly evaporate it away

[WarChild]

I think it would be running bad if it had a ho le I the piston...lol..

Yea oil level doesnt ever change it also doesnt get milky.

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