Oil in intake ??

[500ss rider]

I had my intake tube off today and noticed it had some oil in it. The throttle boddy was also pretty gummed up with oil so I cleaned it out. I checked the pcv valve and it seemed to be somewhat clogged up so I cleaned it out with some carb cleaner. Any idea why I'm sucking oil into my intake?

 

[Evan]

I had my intake tube off today and noticed it had some oil in it. The throttle boddy was also pretty gummed up with oil so I cleaned it out. I checked the pcv valve and it seemed to be somewhat clogged up so I cleaned it out with some carb cleaner. Any idea why I'm sucking oil into my intake?

Because that's what the PCV line does. Blow-by in the cylinders creates positive pressure in the crankcase. The PCV valve allows this air to be purged, but there is a fine oil mist in that air due to the oil splashing around in the crankcase.

If this bothers you, get an oil-air separator and put it in-line between the PCV valve and the upper intake.

 

[500ss rider]

Because that's what the PCV line does. Blow-by in the cylinders creates positive pressure in the crankcase. The PCV valve allows this air to be purged, but there is a fine oil mist in that air due to the oil splashing around in the crankcase.

If this bothers you, get an oil-air separator and put it in-line between the PCV valve and the upper intake.

It just seems like there was to much oil. The oil was actually pooling in the low spots. Is that normal?

 

[Wicked_Sludge]

the PCV is connected to manifold vacuum, BEHIND the throttle body. if his throttle plate is getting oily, it is not due to normal PCV function.

i would replace the PCV valve (use ONLY motorcraft replacment parts here). if the TB becomes gummed up again, you probably have excessive blow by (worn rings), which will require a tear down.

 

[500ss rider]

Damn I hope I dont have to do a tear down on it

 

[Woodsman]

I've seen many other intakes with pools of oil in them and engines that were running fine. I wouldn't worry too much about blow by if the PCV valve was gummed up.

Just my 2 cents.

 

[97ranger4x4]

Like Wicked said, replace the PCV, its a $3 part and takes 30 seconds. Not to mention I think it is one of those parts that is supposed to replace every other year just to be on the safe side! And defenatly go with Motorcraft!

 

[exbass94]

You wouldn't happen to be using a K&N filter would you?

 

[500ss rider]

You wouldn't happen to be using a K&N filter would you?

Nope

 

[jasonl]

Check the where the PCV tube goes into the air fiter tube. If the oil was coming from there it can cause the tube to swell and create a vaccum leak. If the pcv tube has oil in it then that was most likely your problem. Clean all the oil out and install a new PCV valve as mentioned earlier.

 

[Ranger#1]

i had this prob to but it was only behind the throttle plate

 

[94redranger]

What would be the problem if there is oil in the intake tube itself as well as in the upper intake?

 

[Wicked_Sludge]

thats what the original poster was complaining about.

those are symptoms of a bad PCV system or excessive blowby.

 

[93RedRanger]

I had this same problem last week. My pcv valve was pretty crudded up. I changed out the pcv valve and put in a new air filter (the old one was really dirty) and it seemed to help a lot.