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Old 05-01-2013, 08:13 PM   #41
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I'll see if I can ask the mechanic about the oil separator or get my hands on it
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Old 05-01-2013, 08:46 PM   #42
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Thanks for the pics! I am glad to see that my time wasn't a waste with bad info. I wonder how long it will take until the oil separator fills up. Then what will happen.
I always assumed that it would drain back into the engine, are you saying it does not? I never even considered that.
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Old 05-01-2013, 08:55 PM   #43
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I always assumed that it would drain back into the engine, are you saying it does not? I never even considered that.
I wouldn't imagine it would drain back into the engine. Two reasons.

1) Pretty much defeats the purpose of a oil seperator (In a way)

2) The oil it would capture would be milky and contaminated.

If it does drain back in there. This would be an excellent reason to use a high quality oil and filter.
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Old 05-01-2013, 09:13 PM   #44
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I wouldn't imagine it would drain back into the engine. Two reasons.

1) Pretty much defeats the purpose of a oil seperator (In a way)

2) The oil it would capture would be milky and contaminated.

If it does drain back in there. This would be an excellent reason to use a high quality oil and filter.
Several of the catch cans I looked at drained back into the engine, they do catch a good amount of crud, from what I remember, about 4 to 6 ounces at 5K to 7.5K miles in turbo applications on good motors. And it was milky with at least three layers (maybe four). Gives one pause, does it not?
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Old 05-01-2013, 09:18 PM   #45
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Upon further consideration, if the oil separator draws air from the block and the "PCV" hose from cam cover to intake also draws air, where is it coming from? I don't remember seeing a breather like you would see on the cam cover of a V8 so where is the air sourced from?
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Old 05-01-2013, 09:58 PM   #46
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The Ford separators I've seen drain the oil back into the crankcase and contain a mesh - like medium that acts as a course filter. A small amount of water shouldn't be an issue and will easily vaporize in hot oil.

Considering this is a direct - injected engine, I would much rather have it drain back than to enter the intake where it could never be cleaned from the intake valves. Those are the only two options unless you install a catch can.
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Old 05-01-2013, 10:03 PM   #47
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Upon further consideration, if the oil separator draws air from the block and the "PCV" hose from cam cover to intake also draws air, where is it coming from? I don't remember seeing a breather like you would see on the cam cover of a V8 so where is the air sourced from?
There is a breather hose that runs from the intake to the cam cover.
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Old 05-01-2013, 11:12 PM   #48
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There is a breather hose that runs from the intake to the cam cover.
I never even though of that , I just assumed it was drawing from the cam cover TO the intake. Now, that I think about it, it just makes so much sense.

They call that hose the PCV hose so if the flow is from the main air filter to the intake and before the throttle body then the whole picture falls into place, they use the pressure differential across the throttle body for the source vacuum in the PCV system. Sweet, simple and reliable.

Now, if that purple thing is an actual valve then the entire system is completely explained. Duh, one stupid assumption had me flummoxed for weeks, I feel so stupid sometimes that it hurts.
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Old 05-01-2013, 11:36 PM   #49
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The Ford separators I've seen drain the oil back into the crankcase and contain a mesh - like medium that acts as a course filter. A small amount of water shouldn't be an issue and will easily vaporize in hot oil.

Considering this is a direct - injected engine, I would much rather have it drain back than to enter the intake where it could never be cleaned from the intake valves. Those are the only two options unless you install a catch can.
Assuming (there I go again) that Ford has implemented the cam timing changes that allow the intake valves to get washed with fuel (that 6 hour stint on other sites and Google), we should be good. Implementing a catch can on this engine looks to be a rather big project, I can only see the purple thing (Assumption again that it IS a PCV valve) with a flashlight and it is Tight in there.

Time, and other people taking pictures of their intake valves after many miles will tell.
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Old 05-02-2013, 08:20 AM   #50
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They call that hose the PCV hose so if the flow is from the main air filter to the intake and before the throttle body then the whole picture falls into place, they use the pressure differential across the throttle body for the source vacuum in the PCV system. Sweet, simple and reliable.
Indeed.

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Assuming (there I go again) that Ford has implemented the cam timing changes that allow the intake valves to get washed with fuel (that 6 hour stint on other sites and Google), we should be good.
Yeah, I've read that too, but I just can't believe that process is nearly as effective at washing the valves as port injection. I think Ford has implemented DI very well, but I still would rather not have crankcase vapors/deposits getting in there. Let the hot oil, detergents and oil filter take care of it, I say.

As you say though, time will tell.
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