I was going to clean the IACV and when I removed the airboot, I noticed what appeared to be condensation inside it. I suspect it was coming from the breather tube from valve cover to the boot. TB has some buildup too.

I also noticed that the oil fill cap was cracked pretty good. Could it be possible that the cracked cap could result in a vacuum strong enough to pull oil thru the vent hose?

 

I would think a cracked filler cap would make a vacuum leak and it would pull less through the breather. Either way, get a new cap and a fresh PVC valve. I think I found a little bit of oil in mine before too.

 

Sludge is a tar like substance .... really really thick oil.

Don't confuse it with condensate like crusty deposit.

Salim

 

Let me reword it. The best way to describe it would be like comparing it to the green slime from ghostbusters.

Nothing crusty. It was a liquid like substance.

 

What I had just looked like motor oil, and not very much. Have not seen it since again since I replaced the PVC valve.

 

I replaced the pvc valve over the summer. I did not go oem but I am still suspicious of the vent tube from the front valve cover.

 

I had some type of residue in my throttle body air tube as well. After I saw that, I checked PCV valve and it was clogged. I've since replaced it and I haven't ever seen that type of deposit in there.

 

When the wife gets home I will pull the PCV out and check it. I did replace the oil fill cap last nigt and the cars vibration has almost completely vanished. I am guessing the rest of the vibration will end with the replacement of tranny and motor mounts.

I am supposed to be outside taking the valve covers off my car today but with 50mph wind gusts.... Nope hood is not flying down on me today. With that being said, I better double check the strength of the hood on the rx before I remove the PCV.

 

Do you travel through waterways? I had same problem but it is where i drive it.

 

No the car does not see standing water all that much really.

 

do you have a pictures of it?

 

That's the blow by gases from the crankcase that the PCV pulls into the intake to reburn, it's normal.