Valve stem seals?

IHateHacks · 03-25-2007, 01:17 AM

"I noticed one thing, when i replaced my exhaust manifold gasket and turbo gaskets i saw oil sitting in those little journals inbetween the exhaust ports on the head. Now do my exhaust valve guides poke throught there at all?"

Nope. Those are just hollow areas cast into the head. I had the SAME exact thing happen to me when replacing my exhaust manifold gasket 2 years ago, those holes were filled with oil and I was like WTF? In my case, it was coming from my leaking Cam Position Sensor O-ring. My engine did the same thing, little smoke coming from the exhaust manifold while running and at full operating temp. I'm willing to bet money that your CPS O-ring is leaking. It's only a $2 part from the dealer and takes 10 minutes to change.

That much oil in your engine will not ruin your rings or your valve guides. What it WILL ruin is your rear main seal, front main seal, oil pump driveshaft seal and oil pan seal.

Kuban · 03-25-2007, 05:57 PM

wow thats a relief and a half. and i already replaced half those seals. As far as i know the car isnt leaking anymore oil at all so i should be good there.

Now i gotta say im still curious as to why im still burning oil, AND my pcv is being a little bitch. Put it this way, i have a catch can, and even though its not full, its still some how returning the milky colored oil. I was thinking its a possibility the oil in the pipes and the intercooler were getting drawn up into the intake by the pressure the turbo is creating, and burning through the engine. Also would a miss cause me to burn oil? Like i mentioned, im lossing ALOT of oil pretty quickly. Either through it burning on the exhaust manifold like you mentioned or burning through my exhaust. I mean thats alot of oil to lose that fast. And at 6 bucks a QT. It isnt cheap to keep this car running. I mine as well swipe my credit card across the dashboard everytime i start it LOL. Oil can be seen the most when i let off the gas abrubtly. Iv been staying away from high Rpms. but if im at 3k and i let off the gas while still in gear and coast down speed, thats when you can see it most from the back of the car. Like ALOT. higher r's it come out pretty good too but not like when i let off the gas. That right there would tell me rings, cause when you let off the gas, ur -30 psi or more in the combustions chamber and it sucks oil right past the rings if there bad, and burns it like im seeing.

Kuban · 03-26-2007, 09:00 AM

I should also mention that the car back fires when i let off the gas. And when i cold start. Which isnt cold since im in a 65 degree parking garage, she doesnt want to idle at first. I have to hold the throttle at about 5% for it to keep running. Other wise it will drop to about 400rpms and kinda sputter, sometimes the ecu will correct it and raise the R's for it sometimes it will just die. But after about 30 seconds of driving it idles fine. I believe this is because the pcv oil is sitting in my intake manifold and on my valves probably my head, pistons all that shit is prolly dirty.

My number one question to EVERYONE, if you have a keyboard and a mouse, i want ur guess, assumption, experience, hypothesis, ANYTHING to help me draw a conclusion.

What will cause a pcv to dump oil into my intake? The engine has 30k miles on it. Although i am burning oil out of the exhaust when i let off the gas. I also have a slight miss.

I find it extremely hard to believe its rings because the engine was just rebuilt.

OPINONS PLEASE.

Kuban · 03-26-2007, 11:56 PM

Well update! i was on way home from work today and i live about 20 miles from home. I was on the freeway about half way home and i looked behind me! Well the street was filled with coolant. So i pulled over as soon as i hit the next exit. By that time the needle was pinned above H. I parked, opened the hood. One of the upper heater core lines blew. So i tried pooring coolant in, but it was soooo hot it boiled right back out of the car. Sooo i waited a while, fixed the line, then filled it with coolant. Drove it home, and about a mile from home i gave it a little to see if i blew the hg. You know spool a bit to see if the temp rises. But no everything was good. Temp normal, everything normal. Until the second time i did it and my turbo sounded like a supercharger......

Im assuming when the car overheated and i was driving for those 2 miles or so, the turbo overheated and burned up the bearings. So when ever it starts to spool, it makes a crazy grinding noise. And smokes likes a bitch!
My assumption was the turbo bearings shot.

Could this have been my problem all along? Could the turbos bearings have been bad all along? Causing me to periodically burn oil? And some how cause my pcv to recirc bunk ass oil.

IHateHacks · 03-27-2007, 01:17 AM

Wow, sounds like you had a fun time.

Yes, if your turbo seals are shot, you will burn oil like your rings were bad. So I think it was your problem all along. (why didn't I think of that!)

That sound you hear is your turbo dying.

As far as overheating, if the heater core hose blew and THEN it overheated then that would explain it. If it overheated and THEN the heater core hose blew, well then you have other issues.

My car overheated one day, I changed the thermostat and beat the shit outta it on the highway then next day and it didn't overheat. The following day I was driving and then out of nowhere it just pegged to the H and my aftermarket gauge read 230F. Thats when I got fed up and started my head gasket repair.

Kuban · 03-27-2007, 01:58 AM

yea the heater core hose blew initially, cause i saw the coolant behind me on the freeway (people getting out of my lane hahaha) and then the temp rose about 2 miles later.

I looked at it and one of the plastic male to male adaptors for the heater core i used melted on one side causing it piss all the coolant out into my engine bay! i got a new one of those, filled it up with coolant and she was ready to roll!

But when i drove about 10 miles, i heard the turbo doin that shit.

Yea im assuming this was the issue all along, although would that cause those pcv issues i was describing?

IHateHacks · 03-27-2007, 02:09 AM

Yes, if the turbo seals are shot, oil will get into the turbine housing and burn and oil will get into the compressor housing and neatly distribute itself all over your intercooler piping and intercooler.

Now when you ran the motor without coolant I'm guessing the turbo took the brunt of it. Seeing how turbo's get so hot its not even funny, so without coolant cooling it, the bearings will be destroyed in short order.

03-25-2007, 05:57 PM	#2
Kuban 3" Exhaust Join Date: Feb 2007 Location: Milwaukee, WI Posts: 174	wow thats a relief and a half. and i already replaced half those seals. As far as i know the car isnt leaking anymore oil at all so i should be good there. Now i gotta say im still curious as to why im still burning oil, AND my pcv is being a little bitch. Put it this way, i have a catch can, and even though its not full, its still some how returning the milky colored oil. I was thinking its a possibility the oil in the pipes and the intercooler were getting drawn up into the intake by the pressure the turbo is creating, and burning through the engine. Also would a miss cause me to burn oil? Like i mentioned, im lossing ALOT of oil pretty quickly. Either through it burning on the exhaust manifold like you mentioned or burning through my exhaust. I mean thats alot of oil to lose that fast. And at 6 bucks a QT. It isnt cheap to keep this car running. I mine as well swipe my credit card across the dashboard everytime i start it LOL. Oil can be seen the most when i let off the gas abrubtly. Iv been staying away from high Rpms. but if im at 3k and i let off the gas while still in gear and coast down speed, thats when you can see it most from the back of the car. Like ALOT. higher r's it come out pretty good too but not like when i let off the gas. That right there would tell me rings, cause when you let off the gas, ur -30 psi or more in the combustions chamber and it sucks oil right past the rings if there bad, and burns it like im seeing. Last edited by Kuban; 03-25-2007 at 06:01 PM.

03-27-2007, 01:17 AM	#5
IHateHacks 20psi boost Join Date: May 2006 Location: New Haven/Hamden Posts: 793	Wow, sounds like you had a fun time. Yes, if your turbo seals are shot, you will burn oil like your rings were bad. So I think it was your problem all along. (why didn't I think of that!) That sound you hear is your turbo dying. As far as overheating, if the heater core hose blew and THEN it overheated then that would explain it. If it overheated and THEN the heater core hose blew, well then you have other issues. My car overheated one day, I changed the thermostat and beat the shit outta it on the highway then next day and it didn't overheat. The following day I was driving and then out of nowhere it just pegged to the H and my aftermarket gauge read 230F. Thats when I got fed up and started my head gasket repair. Last edited by IHateHacks; 03-27-2007 at 01:20 AM.

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03-25-2007, 01:17 AM	#1
IHateHacks 20psi boost Join Date: May 2006 Location: New Haven/Hamden Posts: 793	"I noticed one thing, when i replaced my exhaust manifold gasket and turbo gaskets i saw oil sitting in those little journals inbetween the exhaust ports on the head. Now do my exhaust valve guides poke throught there at all?" Nope. Those are just hollow areas cast into the head. I had the SAME exact thing happen to me when replacing my exhaust manifold gasket 2 years ago, those holes were filled with oil and I was like WTF? In my case, it was coming from my leaking Cam Position Sensor O-ring. My engine did the same thing, little smoke coming from the exhaust manifold while running and at full operating temp. I'm willing to bet money that your CPS O-ring is leaking. It's only a $2 part from the dealer and takes 10 minutes to change. That much oil in your engine will not ruin your rings or your valve guides. What it WILL ruin is your rear main seal, front main seal, oil pump driveshaft seal and oil pan seal.

03-26-2007, 09:00 AM	#3
Kuban 3" Exhaust Join Date: Feb 2007 Location: Milwaukee, WI Posts: 174	I should also mention that the car back fires when i let off the gas. And when i cold start. Which isnt cold since im in a 65 degree parking garage, she doesnt want to idle at first. I have to hold the throttle at about 5% for it to keep running. Other wise it will drop to about 400rpms and kinda sputter, sometimes the ecu will correct it and raise the R's for it sometimes it will just die. But after about 30 seconds of driving it idles fine. I believe this is because the pcv oil is sitting in my intake manifold and on my valves probably my head, pistons all that shit is prolly dirty. My number one question to EVERYONE, if you have a keyboard and a mouse, i want ur guess, assumption, experience, hypothesis, ANYTHING to help me draw a conclusion. What will cause a pcv to dump oil into my intake? The engine has 30k miles on it. Although i am burning oil out of the exhaust when i let off the gas. I also have a slight miss. I find it extremely hard to believe its rings because the engine was just rebuilt. OPINONS PLEASE.

03-26-2007, 11:56 PM	#4
Kuban 3" Exhaust Join Date: Feb 2007 Location: Milwaukee, WI Posts: 174	Well update! i was on way home from work today and i live about 20 miles from home. I was on the freeway about half way home and i looked behind me! Well the street was filled with coolant. So i pulled over as soon as i hit the next exit. By that time the needle was pinned above H. I parked, opened the hood. One of the upper heater core lines blew. So i tried pooring coolant in, but it was soooo hot it boiled right back out of the car. Sooo i waited a while, fixed the line, then filled it with coolant. Drove it home, and about a mile from home i gave it a little to see if i blew the hg. You know spool a bit to see if the temp rises. But no everything was good. Temp normal, everything normal. Until the second time i did it and my turbo sounded like a supercharger...... Im assuming when the car overheated and i was driving for those 2 miles or so, the turbo overheated and burned up the bearings. So when ever it starts to spool, it makes a crazy grinding noise. And smokes likes a bitch! My assumption was the turbo bearings shot. Could this have been my problem all along? Could the turbos bearings have been bad all along? Causing me to periodically burn oil? And some how cause my pcv to recirc bunk ass oil.

03-27-2007, 01:58 AM	#6
Kuban 3" Exhaust Join Date: Feb 2007 Location: Milwaukee, WI Posts: 174	yea the heater core hose blew initially, cause i saw the coolant behind me on the freeway (people getting out of my lane hahaha) and then the temp rose about 2 miles later. I looked at it and one of the plastic male to male adaptors for the heater core i used melted on one side causing it piss all the coolant out into my engine bay! i got a new one of those, filled it up with coolant and she was ready to roll! But when i drove about 10 miles, i heard the turbo doin that shit. Yea im assuming this was the issue all along, although would that cause those pcv issues i was describing?

03-27-2007, 02:09 AM	#7
IHateHacks 20psi boost Join Date: May 2006 Location: New Haven/Hamden Posts: 793	Yes, if the turbo seals are shot, oil will get into the turbine housing and burn and oil will get into the compressor housing and neatly distribute itself all over your intercooler piping and intercooler. Now when you ran the motor without coolant I'm guessing the turbo took the brunt of it. Seeing how turbo's get so hot its not even funny, so without coolant cooling it, the bearings will be destroyed in short order.