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Old 08-28-2014, 05:01 PM   #1
SnowWhite07
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Default Air coming out of oil filler neck

So my car is consuming ALOT of oil. Intercooler piping is clean. Not leaking. Some black smoke under hard acceleration but that is just fuel. Car is tuned a little rich. Just replaced pcv valve. But i thought i read a post when air is coming out of oil filler neck it means the rings are bad. Going to in the week or two get a compression and leak down in a week or two. But just curious if anyone can confirm or deny about what the air coming out of the oil filler neck may mean. Thanks in advance everyone! And have a great holiday weekend
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Old 08-28-2014, 05:12 PM   #2
MikeG4936
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Smoke coming out is bad. Air will always come out when the engine is running.
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Old 08-28-2014, 05:12 PM   #3
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is it visible air? as in smoke?

cause pressure builds up and air will come out of the oil filler tube regardless
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Old 08-28-2014, 05:16 PM   #4
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Exhaust is bad and you will know it when you see it and smell it. How much oil is it eating?
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Old 08-28-2014, 06:54 PM   #5
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Smoke bad, air normal.
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Old 08-29-2014, 08:44 AM   #6
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No smoke coming out of oil filler neck. Just a little black smoke when i go WOT. AFR gauge reads 10.2 when i go WOT then climbs to 11. So far in five hundred miles i have probably gone through 4 quarts. Rotella T6. i know that is excessive. I wanted to start with PCv valve because if it was bad it could have caused problem. Car idles smoothly and runs great. Pulls strong to 18 pounds of boost. So i am guessing a compression and leak down test are next in line. There is ALOT of soot on the exhaust tip. My mechanic checked it and said it just seems to be from too much fuel. So i might have to look into getting to car retuned.
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Old 08-29-2014, 10:36 AM   #7
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Quote:
Originally Posted by SnowWhite07 View Post
So I might have to look into getting to car retuned.
That's usually a good idea when you put in a new motor.

4 quarts in 100 miles??
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Old 08-29-2014, 11:26 AM   #8
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Quote:
Originally Posted by ALOKIN View Post
That's usually a good idea when you put in a new motor.

4 quarts in 100 miles??
literally an oil change per 100 miles...
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Old 08-29-2014, 11:44 AM   #9
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4 quarts in 500 miles he said... Not that it matters!
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Old 08-29-2014, 12:29 PM   #10
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I freak when I go through 1/2 a quart in month....
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Old 08-29-2014, 12:44 PM   #11
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its got cracked ringlands....it ist dead yet but its terminal...that much oil is the tell, here

stick a fork in it...its done
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Old 08-29-2014, 02:37 PM   #12
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Quote:
Originally Posted by SnowWhite07 View Post
So far in five hundred miles i have probably gone through 4 quarts.
Hehe. I hope you have $5k sitting around, because you're about to use it.
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Old 08-29-2014, 02:48 PM   #13
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of course. The five thousand is setting next to my pot of gold..........
But if that is the case on the plus i can build it stronger, better and faster
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Old 08-29-2014, 02:55 PM   #14
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one question though. If it is the motor wouldn't i see more smoke? There is none on start up. Just when i am WOT... And then it is just black and has a fuel smell to it.
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Old 08-29-2014, 03:27 PM   #15
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Quote:
Originally Posted by SnowWhite07 View Post
one question though. If it is the motor wouldn't i see more smoke? There is none on start up. Just when i am WOT... And then it is just black and has a fuel smell to it.
Doesn't have to. My car didn't smoke at all, the only symptom I had of broken ringlands was my knock sensor going off.
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Old 08-29-2014, 03:35 PM   #16
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maybe you are running so rich that its covering up the blue smoke?
that much oil in that low of miles is crazy, it would almost be pouring or dripping out somewhere.
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Old 08-29-2014, 04:20 PM   #17
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ah. When i got my last tune he mentioned something about that. He thought it was just the previous tune... well i guess time to baby the motor and start saving..
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Old 08-31-2014, 04:26 AM   #18
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Compression test before assumptions ?

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Old 08-31-2014, 11:29 AM   #19
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Johnson valve malfunction.
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Old 09-02-2014, 08:41 AM   #20
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Yep, Going to do compression and leak down test next week. Can't do now due to work schedule....
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Old 09-02-2014, 08:59 AM   #21
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Sorry but if it was a PCV problem there would be trace amounts (maybe even puddles) of oil in the intercooler/piping/intake/compressor housing. This is an internal/turbo failure no doubt.

And 10.2 is pig rich. Id beat my tuner in his head if he ever tuned my car that rich....you might be getting some bore wash going on that led to the failure (s) you are about to diagnose.

Last edited by 2Fast4U1DAY; 09-10-2014 at 12:45 PM.
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Old 09-10-2014, 12:13 PM   #22
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Well just did compression test. 155 across the board he said. So they are thinking it is the turbo starting to go. It is the stock turbo and i was thinking of upgrading it anyways. As far as running rich when i go WOT it goes to 10.2 and then climbs to 11. I asked the tuner about that and he said it was ok.. What numbers should I be looking for when I go WOT?
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Old 09-10-2014, 03:55 PM   #23
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Well I have done some poking around today on a plan of attack. I am thinking i will take this "opportunity" to do a slight upgrade with the turbo to a VF39. Not a big change but it will get me to where i want to be performance wise. Now I just need to find a good shop to talk to and take the car to them.
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Old 09-11-2014, 07:32 PM   #24
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I have literally the exact same symptoms as you, just replaced my pcv valve to see if thats what cures it. Im wondering if a leak down test would show something that the compression test is hiding?
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Old 09-12-2014, 08:16 AM   #25
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Compression & leakdown test will show you if your rings are bad. Mine came back good so the suspect is the turbo. By next friday i should have a new turbo and tune. Crossing my fingers that will fix the problem.
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