Re: Oil by throttle body etc!

Colorado-SHOBro · April 22, 2018, 04:20:03 PM

well got cut short today due to a couple issues i noticed after my first 2 passes. had a split front turbo connector hose and i'm getting oil in the TB and intake.

decided to play it safe even though the car was running well and felt strong.
anyhow just barely squeaked out a best ET on the first pass

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Colorado-SHOBro · April 22, 2018, 04:39:02 PM

after a couple track passes today I noticed oil gathering below the throttle body inlet. map sensor was coated with oil pretty good and had some oil accumulation in the intercooler.
(phone won't let me upload pics, will update later)
i made several wot runs previous to the track visit and none of these issues were present.
checked the oil separator( which is only a couple months old) and there was no milky residue.
also blew/sucked through all the catch can lines and they were only moving one way which tells me the check valves are working properly as far as I can tell at the moment.
any ideas what else would cause oil to be getting into the intake like this?
. . this is after i wiped off the valve cover some. oil accumulation isnt crazy but more than normal

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StealBlueSho · April 22, 2018, 04:44:00 PM

Quote from: Colorado-SHOBro on April 22, 2018, 04:39:02 PM
after a couple track passes today I noticed oil gathering below the throttle body inlet. map sensor was coated with oil pretty good and had some oil accumulation in the intercooler.
(phone won't let me upload pics, will update later)
i made several wot runs previous to the track visit and none of these issues were present.
checked the oil separator( which is only a couple months old) and there was no milky residue.
also blew/sucked through all the catch can lines and they were only moving one way which tells me the check valves are working properly as far as I can tell at the moment.
any ideas what else would cause oil to be getting into the intake like this?

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From previous threads and research, this generally happens when one of the turbos is failing iirc.... everything I have read seems to indicate that. Guys with excessive blow by tend to discover the turbos are leaking internally.

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StealBlueSho · April 22, 2018, 04:51:21 PM

Did you datalog the passes? If you are getting excessive oil in the intake I would imagine you might see some KR... but your spraying meth too right? Might offset it...

I would check the turbos for shaft play...

How long have you had the catch can on your car?

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Colorado-SHOBro · April 22, 2018, 05:13:04 PM

Quote from: BJSHO on April 22, 2018, 04:51:21 PM
Did you datalog the passes? If you are getting excessive oil in the intake I would imagine you might see some KR... but your spraying meth too right? Might offset it...

I would check the turbos for shaft play...

How long have you had the catch can on your car?

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i'll have datalogs when i get home tonight. no meth just E30. got knock in 3rd and 4th but all less than 1*. car still felt strong and put up the same times it did last year.

that being said turbos are suspect.
the front turbo to cac pipe is slightly split also i noticed, don't think that would cause the oil issue though

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StealBlueSho · April 22, 2018, 05:16:57 PM

Quote from: Colorado-SHOBro on April 22, 2018, 05:13:04 PM
Quote from: BJSHO on April 22, 2018, 04:51:21 PM
Did you datalog the passes? If you are getting excessive oil in the intake I would imagine you might see some KR... but your spraying meth too right? Might offset it...

I would check the turbos for shaft play...

How long have you had the catch can on your car?

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i'll have datalogs when i get home tonight. no meth just E30. got knock in 3rd and 4th but all less than 1*. car still felt strong and put up the same times it did last year.

that being said turbos are suspect.
the front turbo to cac pipe is slightly split also i noticed, don't think that would cause the oil issue though

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Well the split pipe wouldn't help! I would check your wastegate duty cycle on the logs... if it's really high due to the boost leak from that pipe, it could have exacerbated the oil issue from the turbos. Basically due to the boost leak the turbos could have been working harder (spinning faster) to hit the target boost...

Hopefully it's something more simple like a faulty catch can...

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StealBlueSho · April 22, 2018, 05:17:56 PM

And I'm not gonna mention your 2 second reaction time.....

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Colorado-SHOBro · April 22, 2018, 05:25:21 PM

Quote from: BJSHO on April 22, 2018, 05:17:56 PM
And I'm not gonna mention your 2 second reaction time.....

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haha don't care about rt unless i have a grudge against the guy in the other lane. gotta keep in mind i have to build up to 2400rpm to build boost at a track with 5800da

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Colorado-SHOBro · April 22, 2018, 05:29:57 PM

updated the op with a couple pics.

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ZSHO · April 22, 2018, 05:57:18 PM

Codes please! Check the air filter box for any evidence of oil pooling.
I think you might need a new rear valve cover IMO!
It also seems your a couple quarts low on oil based on the oil dipstick! Z

Colorado-SHOBro · April 22, 2018, 06:50:01 PM

Quote from: ZSHO on April 22, 2018, 05:57:18 PM
Codes please! Check the air filter box for any evidence of oil pooling.
I think you might need a new rear valve cover IMO!
It also seems your a couple quarts low on oil based on the oil dipstick! Z

the pic is of the front valve cover. and the oil on the dipstick is from the cac. i just used the dipstick to see how much had pooled inside the intercooler. actual crankcase oil level is just below the top hash mark and hasn't hardly dropped since the onset of the issue

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ZSHO · April 22, 2018, 08:02:56 PM

How's the coolant level ? Z

Colorado-SHOBro · April 22, 2018, 08:33:17 PM

Quote from: ZSHO on April 22, 2018, 08:02:56 PM
How's the coolant level ? Z

hasn't moved in months. just above the full line when cold

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Colorado-SHOBro · April 23, 2018, 01:51:23 AM

Here's a datalog from the 2 passes. Really nothing unusual. I know some will comment on my Wastegate duty cycle. It is normal range for my car. The altitude just runs the turbos hard.

However i did a comparison of one of these passes to one of my passes last year and it does seem my WGDC is 3-5% higher now . . . which doesn't make sense being that i was running stock downpipes last year. The PPE Downpipes should reduce the WGDC a few %. That could be caused by the front turbo charge pipe coupler being split. I'll be fixing that as soon as i can.
does anyone know if you have to replace that entire charge pipe or can you remove the rubber coupler and just replace that?

I'm still scratching my head on where the oil could be coming from though. Guess i'll have a chance to give the front turbo a visual when i replace the charge pipe.

Is there any way to test or check if the turbos are leaking internally?

ZSHO · April 23, 2018, 09:03:58 AM

This Hose! I would say you need to replace the entire charge pipe as its a complete unit,assembly IMO.
I would remove the WG MOD and proceed from there! sorry for the late reply.

@ CSB any broader PIC'S of the Front valve cover ? Z