Anyone had an issue with this? I did a VC job and got some burning oil smell and a little bit of smoke on top/rear engine. Thought it was the VC gasket until more research. Look at the PCV vent hose and bunch of oil around it and dripping towards back of VC. So I took it off, cleaned it all up, cleaned the RB valve (external pcv kit) and plan on driving it for few days to let oil burn off and then check to see if it is leaking again. Just wanted to check and see if anyone had a issue with this hose not seating properly? It is at a little angle and the passenger side of the hose is not pushed in as far as the driver side. But, it is all the way on and the clips are holding it on like it should. Was thinking maybe a bigger o-ring next time, but that shouldn't be the solution.
PCV Vent Hose Leak
- Thread starter pysical
- Start date
I am talking about this: 11157553949
All clips are holding it on. But it allowed oil to come out of it and spew on the back of the valve cover, run down the valve cover, and end up burning and smoking. I am not sure why this would be doing it? New VC and new vent hose. Just checking to see if anyone had oil leaking from that hose and what you did to fix it.
All clips are holding it on. But it allowed oil to come out of it and spew on the back of the valve cover, run down the valve cover, and end up burning and smoking. I am not sure why this would be doing it? New VC and new vent hose. Just checking to see if anyone had oil leaking from that hose and what you did to fix it.
Yep, that's the flapper valve (so called because of the box in the hose has a flapper in it). If it's leaking at the VC connection and the clips are seated fully that's a new one on me. Usually the only time I've had that issue is if the clips weren't seating correctly.
What's your crankcase pressure like? If you have excess crankcase pressure I could see this being an extenuating circumstance too as the flapper would seal under boost, the crankcase pressure would increase, and if the clips on this hose weren't seated correctly you'd get a leak here.
You can do a boost leak test and see how much leakage you are getting into the crankcase by checking your oil fill. Mine was horrible and when I opened the oil fill cap during my boost leak test the cap went flying off (had about 5psi of pressure in it). Plugging the intake ports with the RB intake port plugs fixed this for me.
What's your crankcase pressure like? If you have excess crankcase pressure I could see this being an extenuating circumstance too as the flapper would seal under boost, the crankcase pressure would increase, and if the clips on this hose weren't seated correctly you'd get a leak here.
You can do a boost leak test and see how much leakage you are getting into the crankcase by checking your oil fill. Mine was horrible and when I opened the oil fill cap during my boost leak test the cap went flying off (had about 5psi of pressure in it). Plugging the intake ports with the RB intake port plugs fixed this for me.
I'd do both a boost leak test and a leakdown test too. Leakdown is through the sparkplug holes and boost leak is through the intake ports. Your boost leak test is easy and cheap and tells you if you have any leaks in your intake tract, and in your specific situation if your PCV system is sealing adequately. A leakdown test takes a special tool to put in place of your sparkplugs and connects to your compressor, it pressurizes your cylinder and tells you how well your cylinders are sealing. If you have blowby issues pressurizing your crankcase you'll find it with this test.
The cheapest and first step should be removing the hose and just checking to make sure nothing (grit grime etc) is preventing it from getting a good seal. But I kind of assumed you did that. Decided not to make an ass out of us, so I'll bring it up 
Here are two pictures I just took. It is leaking right now. The first picture shows how it sits. But it is connected and the clips are hooked.
Second picture shows where it is leaking down to the back of the VC.
The only other thing that could be leaking MAYBE is the RB valve??? Which I doubt it?
If the RB valve is clogged and not functioning then it could exacerbate the issue. Just pull it out really quick (it just popps out) and give it the ole suck blow test. Just have a beer handy to wash your mouth out after hahahah.
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