Milky Oil

[Surcouf]

How can I tell that the weep hole is clear?

stick a screw driver trhough it. If you can hit the water pump shaft, it is not blocked

[capnward]

If the weep hole leaks when engine is running, it is clear, and you need to work on the pump. If you have the problem I had, there will be no doubt the weep hole is clear. I don't know what could clog the weep hole, which is pretty big, unless you have the old-style pump with the grease cup and have been forcing grease past the seals. And even if the weep hole is open, the pump could still be the source of water in the crankcase oil, if the seals are completely shot.

[prstack7]

Continuing the trouble shooting

No water exiting the weep hole on water pump. It doesn't make sense to me that the pump would be the source without seeing water leaking. I don't want to rebuild the water pump if I don't have to. Water is exiting the exhaust and the engine is not overheating.

Continuing to have milky oil. Could there be back pressure on exhaust from muffler? No problem with engine running. Very smooth.

[joe_db]

You could have a tiny leak in a number of places dumping water into the oil that would not make the engine run poorly.

[Dave Neptune]

Are you definitely getting more water? Getting the water out can be a bit frustrating as it takes a few changes to do so. Take a careful look via the dip stick to see if the level is actually going up. Since you did a pressure check and it passed the block and manifold are good. That leaves the water pump or the exhaust back filling.

Another note, did you run the engine up to temp when you did oil changes? If the oil level is not rising (the careful check above) it may be you are not getting all of the "oil" out. Just a tiny bit of water will turn the oil milky. I usually add a table spoon of liquid dish detergent as it helps to emulsify the water into the oil and helps in getting it out. I do this twice then add just the oil and run. The oil will often look a bit milky still and you will see condensation at the oil fill. I just run her for a couple hours at cruise speed and cook the rest of the water out and when it clears change and your good to go.

Dave Neptune