What would cause water to get in the oil

[metalsyth]

I have a 1992 Nissan Hardbody pickup with the KA24E motor in it. It ran hot on me one time and I noticed water in the oil. Removed the head and got it shaved and had it checked for cracks and replaced the head gasket to the correct pounds. It is still getting water in the oil and not real sure where to look now.

[PalmerWMD]

How much are you getting?You know a certain amount is a normal contamination from combustion.Are you seeing a lot of water or just a tad?

Fred..

[metalsyth]

I not really sure on how much but when it was turning the oil into a light milky color.

[guyaverage]

My brother-in-laws KA24E had water leaking into the oil when the timing chain rubbed a hole in the engine block into the water jacket.

Did you remember to check the block for warpage before replacing the head? Or block could be cracked.

[droll]

Sounds like intake manifold gasket.

[metalsyth]

On the intake manifold gasket, I am wondering how the water enters there just curious. And I am in progress of checking around the timing chain for holes due to rubbing. I had a friend tell me about that.

Also I am kinda new at the mechanic thing so how would I go about checking the block for warpage or it being cracked?

[droll]

Actually, I'll take that back. On these little cars its probably not the most likely cause. On any car, the most likely cause is the head gasket, but since you had all that head work done I was trying to eliminate that. Did you do the work yourself, or did you take it to a shop?

[metalsyth]

I took to a shop and had the guy do it and also had him check the head for cracks.

[droll]

You do need to check the block when shaving the head. Ask the shop if they did that. If you took it to a shop and told them to fix the overheating, I would take it back to them and tell them to fix the problem, because it doesn't seem they did all that was neccessary.

[C-Kwik]

I'd check that front cover as guyaverage has already mentioned. The original timing chain guides on the SOHC KA's are known to fall apart quite easily. They are made of plastic. Newer replacement guides are backed by metal. When the guides go, it allows the timing chain to hit the front cover and saw it's way through into the water channel from the water pump. It may not be a big gaping hole. I replaced a timing chain for a friend of mine once and I only noticed it when I felt a slight ridge in the water channel. When I flipped the cover over to look on the inside, that's when I saw were the metal was worn away. When I looked for a replacement cover in junkyards, I found several with the same problem.

Droll, if a machine shop is decking a head, it should come out flat. They don't knock, say, 1mm off the entire surface, but knock down the high points down to the level of the low point. The low points would have less material removed. As long as the overall depth of the decking was deep enough to knock down the entire surface to just under the lowest point, then it should come out flat.

[droll]

Droll, if a machine shop is decking a head, it should come out flat. They don't knock, say, 1mm off the entire surface, but knock down the high points down to the level of the low point. The low points would have less material removed. As long as the overall depth of the decking was deep enough to knock down the entire surface to just under the lowest point, then it should come out flat.

The concern wasn't whether the head was flattened properly, it was as to whether the block surface was checked for flatness.