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Old 09-15-2018, 04:43 AM   #1
moldynachos
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Default 04 WRX JDM swapped EJ20 blue-ish Smoke

I have a JDM swapped EJ20 on my 04 WRX. the turbo is rotated. I was told from the previous owner the car was tuned to run rich for whatever reason. When I really get on it, it looks like a bunch of thin blue-ish smoke behind me like a cloud. and then on top of that if I stop the car after it looks like some seeps from the exhaust and under my hood some comes from behind the turbo and around the downpipe. I checked the turbo and there is no shaft play. however I've been told its probably the turbo seals. I feel like it could ****ty mounting to the up pipe. as it doesn't look perfect. not sure what to believe with this turbo. help would be appreciated. yes im a noob to the car world but I am trying to learn. I assume oil could be leaking from the turbo on the exhaust side and it gets to the hot exhaust thus burning up. not sure what to do.
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Last edited by moldynachos; 09-15-2018 at 04:52 AM.
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Old 09-15-2018, 06:56 AM   #2
Blktrax
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If thereís enough blue oil smoke to be seen behind the car at speed, thatís a serious oil problem. If it was an external leak on the exhaust that bad, the car would look like itís on fire stitting still.

1, external oil leaks should be fixed, engine fires are never good.
2. Running extremely rich causes un-burned fuel to thin out thin out oil, washing down piston rings and causing excessive wear.
3, Engine oil excessively overfilled (above the fill dot on the dip stick) can be drawn into the intake by the PCV system. This coats the interior of the intercooler lowering its effectiveness and increasing the possibility of spark knock as oil will lower effective octane anti-knock properties.
4. Oil that is too thin to start with in a high mileage/turbo engine.... if youíre not running at least 5w40 rotella or thicker itís only a matter of time. 5w30 isnít thick enough for a modded setup, especially rotated. I run 5w50 Castrol, in my 02 with 224k on the stock block and heads.
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Old 09-15-2018, 10:23 AM   #3
Valarius Starchaser
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Hybrid 6MT Swapped WRB

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I agree with everything said above

however I would like to add if most of the smoke is during "getting on it" as you described it is likely when you are boosting this would indicate a seal failing in the turbo
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Old 09-15-2018, 03:07 PM   #4
subaru_gc8
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or it could be blow by. kinda hard to say. how big is the cloud?
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Old 09-15-2018, 06:16 PM   #5
moldynachos
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Itís not like huge but itís kind of big and again itís only when I do get on it. It only happens like that but when Iím sitting it seeps a little and then stops. Makes me think itís a turbo.
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Old 09-15-2018, 07:03 PM   #6
moldynachos
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Just drove it today again to double check. Itís almost like thereís a turbo lag and after getting on it it smoked up. After looking under the hood it looks like itís coming from the down pipe. After driving casually thereís no smoke.
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Old 09-15-2018, 07:42 PM   #7
Valarius Starchaser
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pull the down pipe and check for excess oil and shaft play what turbo are you running?
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Old 09-15-2018, 07:43 PM   #8
moldynachos
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Itís just the td04. I checked the shaft play from the front. Would the back be different. I need to pull the down pipe off regardless and check. Just havenít been able to get the car up.
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Old 09-20-2018, 09:58 PM   #9
moldynachos
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Did a compression test. Biggest variance was 138-120. It is the jdm motor and I hooked up an accessport today and got some CELís for TGV sensors and one for blow by I forgot what it was. But there are a couple of wire harnesses I noticed in the bay that arenít connected to anything. They have nothing to go to. Confused.
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Old 09-20-2018, 10:01 PM   #10
moldynachos
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It was a PCV code for blow by. My bad. Such a noob
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Old 09-22-2018, 12:14 AM   #11
D-Rodman
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Quote:
Originally Posted by moldynachos View Post
Did a compression test. Biggest variance was 138-120. It is the jdm motor and I hooked up an accessport today and got some CELís for TGV sensors and one for blow by I forgot what it was. But there are a couple of wire harnesses I noticed in the bay that arenít connected to anything. They have nothing to go to. Confused.


Post pictures of said plugs that are not connected.
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