White liquid in oil filler tube??

[CJboy]

Hey-
We first ran the jeep in the summer and no problems, but now since the temp is dropping here in NJ, there is a white liquid in the filler tube. (the engine is a 4cyl f-head 134) we replaced the head gasket a month ago and we recently shaved the head thinking that would solve the problem. the breather tube on the filler is open, we dont have the original air cleanner on. The jeep runs fine, no overheating or anything...

would it just be since the weather is getting colder and causing condensation??

thanks,
Wes

[p3ferris]

Yes a lot of condensation can cause this but I would watch the oil. If it gets white streaks trough it that will mean water getting in some where. Look at oil during changes

[JimP]

If you get the temp up. it should disappear. Just drive it around for some time, or let it run until the oil and water get up to temp.
JimP

[Bob at Warsaw]

humidity seems to work that way

[Rus Curtis]

Wes,
If I understand your original post, your filler neck breather is open like this picture from the CJ3B page, right?


You mention you don't have the original air filter (I'm guessing it was an oil bath for a '56 correct?)

If that's the case then your problem isn't just humidity, it's that you've defeated part of your Crankcase Ventilation system and this is causing excess humidity to form in your filler neck. Depending on your top valve cover (may or may not have a vent port) type,

(possible valve cover configuration from CJ3B page)


that port and the open port on your breather neck should tie together and be connected to your breather.

Image from CJ3B page showing diagram from service manual without tie-in to valve cover ventilation hose.


If you've swapped your air filter breather to a different type, there should already be either a port to attach a hose to or look at the adaptor (whether metal or rubber) that connects to the breather horn on the carb to see if that can be adapted to accept an attachment for a ventilation hose.

If this is done, your condensation problem should resolve itself. That port should not be plugged shut nor left open.

[CJboy]

Russ-
the filler neck is open like the first picture. We do not have the crankcase ventilation system like the one displayed in your second picture, we may cut ot a hole in our valve cover and make it work somehow. Do you have any ideas?

[Rus Curtis]

CJ,
The F-Head had (from what I understand) three different top valve covers (all images from the CJ3B website).

With port (note filler neck/valve cover tie-in before attaching to breather):


Without port (note rubber hose connected to breather):


With intake/screen fitting (filler neck hose would attach same as above):


Attachment to original air breather:



You don't need to alter the one you have. You just need to connect the open port on the Filler Neck to the air intake somehow. I'd recommend after the filter but before the horn.

Also, the second image of my first post only shows the Crankcase ventilation from the top and right side of the engine. The PCV valve and remaining Crankcase Ventilation for the left side and wrap-around the front to connect to the intake manifold (threaded port just below the carb) is shown in the third image of my first post.

PCV valve:


Hope this helps.