Blown Head gasket question
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Blown Head gasket question
Well I was getting straight coolant coming up the ccv tube back into my turbo so I pulled my drivers side head and found the whole headgasket was burnt and ugly. So I'm just wondering where the crankcase vents up through the head. Is it that wierd rectangular shaped port at the top front of the block?
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From: Iowa
The ccv vents from where the oil is (i would guess it's just from the valve cover where the rocker arms are)...if you are getting coolant up through that it means your entire crank case is full of coolant/oil and you have a major problem... are you sure what you are talking about is the ccv? Have you drained your oil to inspect?
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From: L.A. (Lower Alabama)
I believer the passage you are pointing to is a coolant passage. I don't know of a dedicated passage for crankcase pressure to travel through to the valve cover but I think it comes up through the camshaft area and through the rocker boxes around the pushrods.
I've been puzzling over your issue for a few days (I remember your other thread- I Think that was you). The only way I can imagine what you think is happening is happening, would be if the driver side head were cracked between the coolant and oil passages or an injector or glowplug cup was leaking to the outside (both very unlikely). I can't think of a reason why you would be seeing water in the CCV at the intake tube. All I can say is inspect everything very well.
Sorry I can't be of more help
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I've been puzzling over your issue for a few days (I remember your other thread- I Think that was you). The only way I can imagine what you think is happening is happening, would be if the driver side head were cracked between the coolant and oil passages or an injector or glowplug cup was leaking to the outside (both very unlikely). I can't think of a reason why you would be seeing water in the CCV at the intake tube. All I can say is inspect everything very well.
Sorry I can't be of more help
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The machine shop I talked to said they pressure test the heads coolant passages. If you have the heads checked then you will at least know the problem is not the heads, unless they fail the test.
I would have to agree with Rusty that the crankcase vents through the pushrod area somehow, but I am really not sure.
You have an unusual problem, sorry I could not help more.
Did you get passenger side head off?
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I would have to agree with Rusty that the crankcase vents through the pushrod area somehow, but I am really not sure.
You have an unusual problem, sorry I could not help more.
Did you get passenger side head off?
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Unusual is right. I can't find any info anywhere but I guess I'll look into testing the heads. And yes I got the passengers side head off also which was just as ugly n discolored as the drivers side.
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The machine shop also pressure checks the valves to make sure they are seating and holding. They also deck the heads, but not more then .008".
I think the most unusual part of your problem is that the coolant is not mixing with the oil. It is getting in there somehow and blowing right out the vent.
Where there any head bolts that were really loose when you removed them? Sometimes there is one that is just barely snug where all the others are torqued.
Keep us posted, and the pics do help. You would be surprised at what the more trained eyes will spot.
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I think the most unusual part of your problem is that the coolant is not mixing with the oil. It is getting in there somehow and blowing right out the vent.
Where there any head bolts that were really loose when you removed them? Sometimes there is one that is just barely snug where all the others are torqued.
Keep us posted, and the pics do help. You would be surprised at what the more trained eyes will spot.
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Does anybody have a clue where the crankcase vents? There must be one breather port that goes to the drivers side head. If it just vented by the pushrods n stuff then there would have to be a vent tube on the passengers side valve cover too right? My truck is stuck in my barn until I figure this out. Any help would be appreciated.
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From: Iowa
If it vents to the push-rods, there wouldn't need to be one on the other side. All you're doing is making sure the crankcase doesn't build pressure...
That's why your issue is so weird... I cannot think of any possible way for the ccv to have coolant, but not have it mix with the oil. Can't you just look at where the CCV comes out of the valve cover to verify?
That's why your issue is so weird... I cannot think of any possible way for the ccv to have coolant, but not have it mix with the oil. Can't you just look at where the CCV comes out of the valve cover to verify?
Hotshot
Joined: Jun 2006
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From: Hampstead, NC
It just vents up and through. It doesn't have to do it on both sides as it's all connected in the block. You are 100% sure it's coolant and not moisture with some oil in it?
I've seen that before plenty. I don't know how coolant can get up there without getting in the oil too...
I've seen that before plenty. I don't know how coolant can get up there without getting in the oil too...