I sometimes get water in my 4.3L motor oil after it sits a week or
more and at least once have had it get in one or two of the cylinders.
Pulled the exhaust manifolds and they look good, filled them with
water and no drop in water level and it has been a week. Compression
is great (192 to 198 in every cylinder) - Vacuum is perfect. Any ideas?

On Jul 13, 7:50 am, JR wrote:
I sometimes get water in my 4.3L motor oil after it sits a week or
more and at least once have had it get in one or two of the cylinders.
Pulled the exhaust manifolds and they look good, filled them with
water and no drop in water level and it has been a week. Compression
is great (192 to 198 in every cylinder) - Vacuum is perfect. Any ideas?

I had a crazy water problem once. The edge of the engine hatch opening
was right above the carb, when I washed down the boat (and got carried
away with cleaning), the water would spill over onto the ait filter.
Some worked it's way down the carb into the cylinders. I completely
disassembled an engine once because of water in the engine, and never
found a thing wrong. I finally figured it out when I pulled the hatch
after cleaning the boat, and there was the water. I finally solved the
problem by, your going to love this, putting shower caps over the air
filters when I shut the engines down, and left them on until I wanted
to start the engines again. It was a cheap fix. It might be worth a
try.

John

On Jul 13, 12:24 pm, Capt John wrote:
On Jul 13, 7:50 am, JR wrote:

I sometimes get water in my 4.3L motor oil after it sits a week or
more and at least once have had it get in one or two of the cylinders.
Pulled the exhaust manifolds and they look good, filled them with
water and no drop in water level and it has been a week. Compression
is great (192 to 198 in every cylinder) - Vacuum is perfect. Any ideas?

I had a crazy water problem once. The edge of the engine hatch opening
was right above the carb, when I washed down the boat (and got carried
away with cleaning), the water would spill over onto the ait filter.
Some worked it's way down the carb into the cylinders. I completely
disassembled an engine once because of water in the engine, and never
found a thing wrong. I finally figured it out when I pulled the hatch
after cleaning the boat, and there was the water. I finally solved the
problem by, your going to love this, putting shower caps over the air
filters when I shut the engines down, and left them on until I wanted
to start the engines again. It was a cheap fix. It might be worth a
try.

John

Interesting - but in my case - this just started in the last month or
so

On Fri, 13 Jul 2007 04:50:07 -0700, JR wrote:

I sometimes get water in my 4.3L motor oil after it sits a week or
more and at least once have had it get in one or two of the cylinders.
Pulled the exhaust manifolds and they look good, filled them with
water and no drop in water level and it has been a week. Compression
is great (192 to 198 in every cylinder) - Vacuum is perfect. Any ideas?

The usual suspects are risers, manifolds or head gaskets.