Valve seals or turbo seals? White smoke & oil burn smell
May 16, 2017, 11:41 AM
#1
Valve seals or turbo seals? White smoke & oil burn smell
Alright you guys are going to kill me with all the thread I've been making recently but I swear it's been one thing after another lately.
So I have just recently started noticing an oil burning smell and I'm also noticing a little bit of white smoke but mostly only in the morning after it warms up. After it warms up it either stops smoking or is smoking so little that I can't notice it. Car still "feels" fast. Everything runs fine. No oil in tail pipe (there is a black carbon buildup, but that's just from it running a little rich at the moment I believe).
Oil and coolant levels haven't dropped at all.
I was told to unbolt the exhaust manifold and pull it towards radiator, and swipe my finger in one of the ports and if there is oil then that means valve seals are bad?
Anyways I am just looking for suggestions at this point. Car is 06 Evo 9. 54k miles. FP Red that was freshly rebuilt less than 4-5k miles ago. Stock block, kelford 272 cams with stock valvetrain.
I really started noticing it after switching to speed density 2 weeks ago. I put an STM Intake on the car and it didn't have a pcv bung so we left my factory pcv hose (drivers side vc) just dangling. I doubt it had anything to do with this but worth noting?
So I have just recently started noticing an oil burning smell and I'm also noticing a little bit of white smoke but mostly only in the morning after it warms up. After it warms up it either stops smoking or is smoking so little that I can't notice it. Car still "feels" fast. Everything runs fine. No oil in tail pipe (there is a black carbon buildup, but that's just from it running a little rich at the moment I believe).
Oil and coolant levels haven't dropped at all.
I was told to unbolt the exhaust manifold and pull it towards radiator, and swipe my finger in one of the ports and if there is oil then that means valve seals are bad?
Anyways I am just looking for suggestions at this point. Car is 06 Evo 9. 54k miles. FP Red that was freshly rebuilt less than 4-5k miles ago. Stock block, kelford 272 cams with stock valvetrain.
I really started noticing it after switching to speed density 2 weeks ago. I put an STM Intake on the car and it didn't have a pcv bung so we left my factory pcv hose (drivers side vc) just dangling. I doubt it had anything to do with this but worth noting?
May 16, 2017, 11:46 AM
#2
Actually it's good you mentioned that last part. It may very well be the cause of your problem. Crank case issues can cause oil to be forced back up the turbo oil return line and burn under high boost (or even cruise in some cases). Before the STM intake, you were sucking air out of the valve cover using your previous intake which would reduce crank case pressure. The solution is to find another way to pull a vacuum on your valve cover or enlarge the driver side valve cover opening to fit a -10AN fitting where it would vent pressure better, just as TScomptuned has done. You may also want to look into STM's sealed catch can kit, but that's $$$. How much boost are you currently running?
May 16, 2017, 11:49 AM
#3
EvoM Guru
iTrader: (1)
The PCV line is exactly the issue. I suggest modifiying the valve cover to accept a 1/2" NPT fitting. The get a 1/2" NPT to 5/8" hose barb fitting, weld a 5/8" hose barb to the intake (or 1/2" npt bung and use a 1/2" NPT to 5/8" hose barb adapter), and connect them with 5/8" pcv hose. This will greatly increase crank case ventilation. Which these cars need.
https://www.evolutionm.net/forums/ev...re-issues.html
https://www.evolutionm.net/forums/ev...re-issues.html
Last edited by letsgetthisdone; May 16, 2017 at 02:58 PM.
May 16, 2017, 12:42 PM
#4
Actually it's good you mentioned that last part. It may very well be the cause of your problem. Crank case issues can cause oil to be forced back up the turbo oil return line and burn under high boost (or even cruise in some cases). Before the STM intake, you were sucking air out of the valve cover using your previous intake which would reduce crank case pressure. The solution is to find another way to pull a vacuum on your valve cover or enlarge the driver side valve cover opening to fit a -10AN fitting where it would vent pressure better, just as TScomptuned has done. You may also want to look into STM's sealed catch can kit, but that's $$$. How much boost are you currently running?
The PCV line is exactly the issue. I suggest modifiying the valve cover to accept a 1/2" NPT fitting. The get a 1/2" NPT to 5/" hose barb fitting, weld a 5/8" hose barb to the intake, and connect them with 5/8" hose. This will greatly increase crank case ventilation. Which these cars need.
https://www.evolutionm.net/forums/ev...re-issues.html
https://www.evolutionm.net/forums/ev...re-issues.html
By the way I'm running 28psi on the fp red. E85
May 16, 2017, 01:48 PM
#5
Account Disabled
You'll know what's wrong when you pull out the sparkplugs, number them, take a photo.
Put the photo up on here.
It's NOT the PCV system, it never is but you can easily modify PCV systems to hide the real problem.
It's like burying your head in the sand and telling yourself that there's nothing wrong.
Put the photo up on here.
It's NOT the PCV system, it never is but you can easily modify PCV systems to hide the real problem.
It's like burying your head in the sand and telling yourself that there's nothing wrong.
May 16, 2017, 02:28 PM
#7
EvoM Guru
iTrader: (1)
You'll know what's wrong when you pull out the sparkplugs, number them, take a photo.
Put the photo up on here.
It's NOT the PCV system, it never is but you can easily modify PCV systems to hide the real problem.
It's like burying your head in the sand and telling yourself that there's nothing wrong.
Put the photo up on here.
It's NOT the PCV system, it never is but you can easily modify PCV systems to hide the real problem.
It's like burying your head in the sand and telling yourself that there's nothing wrong.
Shut up. Go away.
Do not listen to Fred, he doesn't know what he's talking about.
Turbo's don't have "seals". They have gas rings that work on differential pressure. The only way they really get damaged is bearing failure (you would notice the comp wheel touching the housing), or over speeding the turbo, by a lot. Which would also likely result in bearing failure. Currently, crank case pressure is too high. You need to rectify this. Depending on what intake you had before, theire could have been more vacuum in the intake pipe vs the better flowing ETS intake.
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May 16, 2017, 02:33 PM
#8
Shut up. Go away.
Do not listen to Fred, he doesn't know what he's talking about.
Turbo's don't have "seals". They have gas rings that work on differential pressure. The only way they really get damaged is bearing failure (you would notice the comp wheel touching the housing), or over speeding the turbo, by a lot. Which would also likely result in bearing failure. Currently, crank case pressure is too high. You need to rectify this. Depending on what intake you had before, theire could have been more vacuum in the intake pipe vs the better flowing ETS intake.
Do not listen to Fred, he doesn't know what he's talking about.
Turbo's don't have "seals". They have gas rings that work on differential pressure. The only way they really get damaged is bearing failure (you would notice the comp wheel touching the housing), or over speeding the turbo, by a lot. Which would also likely result in bearing failure. Currently, crank case pressure is too high. You need to rectify this. Depending on what intake you had before, theire could have been more vacuum in the intake pipe vs the better flowing ETS intake.
May 16, 2017, 02:57 PM
#9
EvoM Guru
iTrader: (1)
The PCV line is exactly the issue. I suggest modifiying the valve cover to accept a 1/2" NPT fitting. The get a 1/2" NPT to 5/8" hose barb fitting, weld a 5/8" hose barb to the intake (or 1/2" npt bung and use a 1/2" NPT to 5/8" hose barb adapter), and connect them with 5/8" pcv hose. This will greatly increase crank case ventilation. Which these cars need.
https://www.evolutionm.net/forums/ev...re-issues.html
https://www.evolutionm.net/forums/ev...re-issues.html
May 16, 2017, 03:48 PM
#13
EvoM Guru
iTrader: (1)
Idk. According to him every single issue with an evo is either fuel pressure, or the motor is burning/consuming oil through valve seals or rings...lol. Never anything else.
May 16, 2017, 03:55 PM
#14
So if I can get this crankcase pressure issue solved, will / should my problem go away? Is there a good chance I have done damage to the turbo by leaving that pcv ki ne unhooked for roughly a week? Like I said, car still pulls hard and boosts normal.
I appreciate the spoon feeding. This is just my first "somewhat high" hp FI car. And I just want to keep it running top notch.
I appreciate the spoon feeding. This is just my first "somewhat high" hp FI car. And I just want to keep it running top notch.
May 16, 2017, 03:59 PM
#15
So if I can get this crankcase pressure issue solved, will / should my problem go away? Is there a good chance I have done damage to the turbo by leaving that pcv ki ne unhooked for roughly a week? Like I said, car still pulls hard and boosts normal.
I appreciate the spoon feeding. This is just my first "somewhat high" hp FI car. And I just want to keep it running top notch.
I appreciate the spoon feeding. This is just my first "somewhat high" hp FI car. And I just want to keep it running top notch.
2. No, Your turbo won't sustain damage like that.