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Anybody know what hose this is?

653 Views 8 Replies 4 Participants Last post by  RPW00Mirage
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took of this hose & had a **** ton of oil come out. could this correlate to a misfire i’m having?
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That should be going from your turbo outlet to the intercooler, the chunky metal donut is an airflow resonator. I would bet the oil is probably clogging your intake valves if it really had THAT much oil in it.

I'm actually here for a similar issue, the crankcase vent that goes from the engine valve cover to the intake side of the turbo is SPEWING oil out while driving and making my turbo fins caked in oil.
When I'm idling, the PCV is actually pulling a vacuum. It's so weird and I want to know why it's doing that.
You're checking the wrong end of the pcv valve.
I'm sorry I didn't mean the pcv valve, that to the manifold I 100% agree with you, but there's a pre turbo hose from the valve cover with no check valve that when I put my finger over the barb on the valve cover it pulls a vacuum.
Basically speaking, that there is a vacuum or (negative pressure) in the crankcase is a good thing. Racers install air pumps on their engines to achieve that exact condition. The only way I see that the engine can develop a vacuum in the engine would be through the (positive crankcase ventilation) system which has already been mentioned. That the engine is able to maintain the internal vacuum speaks well of the pistons, rings and cylinders. :)
So, basically it's functioning fine, that's good to know, and the oil deposits in my compressor are simply a product of high boost vapors going out the only vent available on the cover?
Darn, I really need to just get a catch can, but still, the amount of oil loss sOmEWhEre in my engine is quite high for my liking.

The shaft play is still tight on the turbo, not really any leaks on the engine outside. I'll have to look into the internals a bit further, but thank you for your input on the crankcase negative pressure/ transition to boost positive pressure.
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