Oil in Air intake

[joshe320i]

hey

I have just changed the air filer and found oil in. After having a look it was all throught the air intake system. what should i use to clean it or is it normal.

[jlevie]

Oil in the intake is normal for a higher milaage M20 engine. It is simply the result of increased blowby from wear in the rings and cylinders and worn valve stem seals. You can remove the intake and clean it, but oil will reappear until the engine is brought back to zero time.

[joshe320i]

Oil in the intake is normal for a higher milaage M20 engine. It is simply the result of increased blowby from wear in the rings and cylinders and worn valve stem seals. You can remove the intake and clean it, but oil will reappear until the engine is brought back to zero time.

I'm very new to cars and a student so its on me to get this car running back to perfection. What do you mean by taking it back to zero time. does that mean i need to adjust the tappets?

[metalix1021]

I'm very new to cars and a student so its on me to get this car running back to perfection. What do you mean by taking it back to zero time. does that mean i need to adjust the tappets?

I believe he means back to when the engine was brand new.

[Kershaw]

or a rebuild of the engine.

[Sagaris]

or once you acheive 88 MPH with flux capacitor installed.

[nando]

Oil in the intake is normal for a higher milaage M20 engine. It is simply the result of increased blowby from wear in the rings and cylinders and worn valve stem seals. You can remove the intake and clean it, but oil will reappear until the engine is brought back to zero time.

while this is true, it shouldn't get to the air filter. at worst you should have a light film of oil inside the manifold. an oil saturated filter points to another issue.

I've seen something really odd, where the seals in the "tube of death" under the intake manifold weren't seated. The resulting vacuum leak filled the airbox with oil in a couple hundred miles. I repositioned the tube (seals had just been replaced), replaced the filter and never had the problem again.

[joshe320i]

"tube of death" What one?

I love my car but it has lots of tubes of death

[nickpdx]

"tube of death" What one?

I love my car but it has lots of tubes of death

The spring-loaded metal tube under the intake manifold

[nando]

yeah it's not really that bad to deal with. a couple zip ties makes quick work of it, but it freaks some people out.

[Gnarles]

while this is true, it shouldn't get to the air filter. at worst you should have a light film of oil inside the manifold. an oil saturated filter points to another issue.

I've seen something really odd, where the seals in the "tube of death" under the intake manifold weren't seated. The resulting vacuum leak filled the airbox with oil in a couple hundred miles. I repositioned the tube (seals had just been replaced), replaced the filter and never had the problem again.

Exact same thing happened to me. I chased the oil in the intake problem and a vacuum leak for a few months. Ended up being the "tube of death" not positioned correctly.

[e30trooper]

yup tube of death. I did a head gasket and didnt replace the two seals for that gay ass tube. Car ran like shit, smoked on cold start up, burning oil, shit loads of oil in the intake elbow and was fouling out my plugs. I fixed and no more leaking, burning, no jumping idle and all of the above. My car runs great now! I gotta do it again soon tho "i head swap"

[txtorquemade]

Ok.. I have my manifold off and I cant remove the "tube of death" and it does not appear to be spring loaded at all. Is it stuck, screwed up? What? I want to start putting things back together, but Im waiting on a starter to arrive and I want to know I wont have any issues getting things sorted out.

Just got my Peake tool yesterday... yeah!! Ill figure that out too soon.

[nando]

it's got crud around it that's keeping it "stuck". Just pull, it's not screwed in or anything.