E120ER

I’m not familiar with the 1986 22R, but for all intensive purposes I will assume they are the same. The closes exit port on the valve cover is a air return line that connects into the air cleaner. While the aft port is the PCV valve which goes to the base of the carburetor. If replacing the thermostat resolved the loss of coolant issue, then I’m not sure I understand what the current problem you are having, sorry. You mentioned that “middle on the gromet is a little mixed”, is it safe to say that you are referring to the oil filler cap?

Gr33n3machin3

Ok so I relpaced the thermostat, it solved the loss of coolant through the overfill. Now it is disappearing and not in the oil. Checked my Pistons and they are not wet, checked the oil and it is not mixed, but there is high pressure in the valve cover (if that makes sense)

E120ER

I would do a leak down test, to start. Have you checked the spark plugs to see if indeed the engine is running rich, thus black in color. Or are the plugs nice and clean, meaning that the coolant is entering the combustion chamber and cleaning the plugs. You could have a leaking intake gasket and causing that or the coolant is just running down the side of the block and then dripping to the ground.

akwheeler

cooling system pressure test!!!
the coolant will go somewhere and you will be able to find it.
pressure it up, pull your spark plugs, watch for leaks to the ground, turn the engine over with a wrench and see if coolant comes out of one or more of the cylinders, keep pressure on it for a while if it is slow to drop or you don't find the leak.

Gr33n3machin3

And the high pressure in the valve cover, blowing oil bubbles in the after market breather?

old87yota

I am curious about the aftermarket breather valve.

Do you have a picture of it installed on the engine?

Where exactly is it hooked up and why did you add it in the first place?

Gr33n3machin3

I installed, because the 32/36 only allowed for the pcv valve.

old87yota

Ahhh.....

Okay, I was thinking that you may have installed a valve on the valve cover that was not allowing the engine to vent.

Thanks for the picture.

Gr33n3machin3

No problem, any ideas?

akwheeler

make sure your PCV valve isn't plugged, it's a vent valve, there should be no way to build pressure.

Gr33n3machin3

Pcv works correctly I've checked, but maybe it's the valve cover baffels

E120ER

Is the heater core leaking? Do you smell coolant in the cab with the heat on high? I have noticed that the 22R of this vintage seems to have the appearance of a significant amount of blow by for what it worth. I would not be to concerned about small traces of oil in that filter though. As the previous poster mentioned, there is an oil baffle on the inside of the valve cover, remove it and check to see if no remnants of the original PCV grommet that could be obstructing the vent hole.

Gr33n3machin3

Makes sense, I was reading through this thread thinking about that because when I changed the pcv grommet it was old and hard and I had dropped some inside because it exploded while I was taking the old one out. Inside the can just smells rich on gas but not sweet, the blower motor is broke so no heat unless I use the out side air setting which is slow to heat of course.

akwheeler

think about this, the venting on your valve cover is supposed to draw air in where you aftermarket filter is, through the head, the PCV and into the intake. the PCV is a one way vent valve. if you are getting pressure buildup in your valve cover there has to be a blockage either in the baffles or in the hose/PCV. if your head gaskets are allowing that much pressure to build up in the valve cover several things would be happening. there would be so much vapors blowing through the PCV into the intake that the motor would be running like crap and burning a ton of oil (way more than you are seeing on the filter would go through the PCV) #2 you would be seeing coolant in your oil unless you have a hole in a piston, in which case you would have a dead hole.
you say you have checked the PCV, did you disconnect and plug the hose and then run the engine to see if vapors were coming out of it? did you rattle it?
If you think you have a blown head gasket try pressuring up the cooling system with the proper tester, if your block fills up with coolant over time or a cylinder you will know for sure you need to pull the head and have a look. there is no test that will tell you for sure what you will find when you dig in to have a look.

Gr33n3machin3

That makes complete sense, thank you. I will dig into these ideas and let you know what I come up with!

Gr33n3machin3

This damn ˟˟˟˟ came out when I blew into the pcv...

akwheeler

looks like water (or coolant ) in your oil, time to start your own thread and do a pressure test or pull the head and have a look.