Overheating cause oil to push out the engine?

[meliketoball]

Can overheating cause oil to push out the engine?

Reason I am asking because a little coolant return line from the turbo busted and my car overheated. (temp gauge went 3/4 up the way.)

On the way home, my car dumped all of my oil on the ground and luckily got home just in time before the engine failed. I replaced my all of the coolant lines in the area and topped off the coolant and oil. Drove the around the block and everything was fine.

Car always had a little drops of oil dripping, for I have a crack in the valve cover. I also noticed pools of oil on top of the transmission after investigating and when it leaked oil, oil dripped down to the center member underneath the transmission.

Can running the engine hotter than usual force oil out of the engine?

Any suggestions? (CAS oring, VC, VC gasket?)

 

[ChiTownHussla]

only thing I can think of right now that makes pressure is your pcv system. All that blowby has to go somewhere....see if its functioning properly

 

[meliketoball]

Will do. Thanks for the reply.

 

[TSIturbo91]

+1on the PCV being clogged. Also have you done a compression test? Blow by at the rings could push oil out the dip stick. That has happened on my car, boost builds up and blow by from worn out piston rings blows oil up and out the dip stick. If it overheated you may have compromised an old gasket seal (e.g. Head gasket) I would clean it all off best you can and take it for a quick run. Then check any spot that could leak in the area where you found the oil.

 

[ChiTownHussla]

Ya +1 on clean then check . didnt think of that

 

[meliketoball]

Yeah, I cleaned it the best I can get it. However, I do not leak out out of the dipstick.

I drove it around the block and there was a few droplets of oil in the same area. (mainly because I poured too much oil in the oil case. fml.)

I'm going to check out the PCV when its light out and do a C. Test when finals are over.

 

[DSM1G90]

All that blowby has to go somewhere

.. and out each end of the block when that excess pressure blows out the main seals.

When that happens, you'll cover the driveway with oil real bad, or get stuck in town with no oil in the crankcase..and a busted motor is the results.

If you're leaking around the crank pulley, that's a front main leaking on you. Leaking between tranny and block..that's a rear main leaking. Either one has to be replaced promptly for if a leaky main is left too much, it will groove the crankshaft and that's a major fix.

 

[herms99gst]

Have you looked to see where the oil actually camw from?

 

[meliketoball]

.. and out each end of the block when that excess pressure blows out the main seals.

When that happens, you'll cover the driveway with oil real bad, or get stuck in town with no oil in the crankcase..and a busted motor is the results.

If you're leaking around the crank pulley, that's a front main leaking on you. Leaking between tranny and block..that's a rear main leaking. Either one has to be replaced promptly for if a leaky main is left too much, it will groove the crankshaft and that's a major fix.

I agree, but how would pools of oil form on top of my transmission?

 

[MU91gsx]

Sounds like your leaking from your valve cover. I can't tell you fully where it could be coming from( seeing how my car came with no head on it ) I think I read you saying you have a cracked valve cover?... I would look into that also.

 

[WES_393]

A cracked valve cover shouldnt leak the amount of oil you're talking about, not without insane crankcase pressure. Warped heads can leak oil out from under the head. The oil galleys which feed the head are right next to the transmission. I would buy some engine degreaser, clean the heck out of the entire engine bay, and buy leak detector from your local parts store. It's a flourescent agent that will glow bright green under a black light. Put it in the oil, start the car, and start looking for a bright green fluid. I would do a compression test as well.

 

[mrvict0r]

Hey bud:

Had a 99GSX do the same thing when we "forgot" to put coolant in it after a timing belt/H2O pump. Oil all over the transmission. We cleaned it all up filled the coolant, rant it to temp and checked compression, leak down, everything looked great. That was 6 years ago. Car is fine. I'm confident you'll be OK.

Hope it helps!

Aaron

 

[meliketoball]

Hey bud:

Had a 99GSX do the same thing when we "forgot" to put coolant in it after a timing belt/H2O pump. Oil all over the transmission. We cleaned it all up filled the coolant, rant it to temp and checked compression, leak down, everything looked great. That was 6 years ago. Car is fine. I'm confident you'll be OK.

Hope it helps!

Aaron

Thanks Aaron.

Do you remember where you guys traced the leak from?

 

[Pwrtrip75]

The car I just purchased and am working on now had the water pump shaft snap. It overheated. What happens is the heat causes the head to expand (thermal expansion) it crushes the head gasket and also could stretch the head bolts/thread and then once it cool it shrinks and the head is no longer torqued down to specs. That causes the oil passage in the corner of the head to pour out oil.
I figured this out when i went to take the head off and only 1 of all the bolts I actually had to use effort to break loose, all the others I broke loose with one hand.

Here is where it was pouring oil out. This is a pic the previous owner sent,, it actually leaked right out the head gasket farther down than the arrow. Put pooled on top the tranny like you say.

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I probably didnt need to take my head off... You can take the valve cover off and check and see if your head bolts are torqued to specs...

 

[turbojo]

that sucks

 

[ChiTownHussla]

keep us and other dsmers posted. this is useful ikn the future

 

[meliketoball]

Thanks a lot man. It's making sense now. Car drives fine, though.

Is it okay if I re-torque the head without damaging the head gasket?

 

[Pwrtrip75]

Thanks a lot man. It's making sense now. Car drives fine, though.

Is it okay if I re-torque the head without damaging the head gasket?

Couldnt hurt to try. You wont do any more damage.

 

[Nosroxs]

The car I just purchased and am working on now had the water pump shaft snap. It overheated. What happens is the heat causes the head to expand (thermal expansion) it crushes the head gasket and also could stretch the head bolts/thread and then once it cool it shrinks and the head is no longer torqued down to specs. That causes the oil passage in the corner of the head to pour out oil.
I figured this out when i went to take the head off and only 1 of all the bolts I actually had to use effort to break loose, all the others I broke loose with one hand.

Here is where it was pouring oil out. This is a pic the previous owner sent,, it actually leaked right out the head gasket farther down than the arrow. Put pooled on top the tranny like you say.

You must be logged in to view this image or video.

I probably didnt need to take my head off... You can take the valve cover off and check and see if your head bolts are torqued to specs...

This guy is 100% correct i had the same thing happen to me but i overheated from losing most my coolant out a turbo coolant line, anyways i had oil leak out the same exact spot.. all over the top of my transmission down the transmission cross member and on the ground, and quite a bit too. i filled the coolant and got a oil change haven't had a problem with it since. this was 5 months ago still haven't had a problem, i am positive you will be fine. These engine are pretty tough cookies, good luck and +10 for Pwrtrip oh yeah 1 more thing..... DSM FOR LIFE \m/ \m/