2005 mariah sx19 3L mercruiser
I've got a water issue that I hope someone can shed some light on. I've read the sticky at the top of the page on milky oil and it was some help, but I need a bit more help. I drained the motor and it was milky, outdrive is fine. I changed the oil and ran it for a couple minutes and the new oil was milky as well, so I did some digging. did a comp test and from cylinders 1-4 they were all over 150. Haven't done a coolant system pressure test yet but tomorrow I will. Took off the lifter cover and there's water on the bottom of it, droplets all over, so a fair bit. engine runs fine, starts perfect and goes in and out of gear great. Checked for cracks under the manifold and didn't see anything, but its a bit rusty under there. After the oil change I kept trying the dipstick and it would show progressively worse milky oil, and more and more droplets of water even on the dipstick the more times I checked.
So I'm thinking if there's that much water in behind the lifter cover, and the engine has good compression, runs and starts up fine, and I didn't see any cracks, then what are the odds that my head gasket would need replacing, and the block is still good? I'm thinking that water is getting through the gasket past the lifter, and I also noticed a bit of water under the valve cover as well.
I just bought the boat too so I don't know the history on it if its been stored properly or not.
Oh and here's a pic of the lifter cover. Would this be a cause of the water getting in? liquid gasket around it was falling apart.
I've got a water issue that I hope someone can shed some light on. I've read the sticky at the top of the page on milky oil and it was some help, but I need a bit more help. I drained the motor and it was milky, outdrive is fine. I changed the oil and ran it for a couple minutes and the new oil was milky as well, so I did some digging. did a comp test and from cylinders 1-4 they were all over 150. Haven't done a coolant system pressure test yet but tomorrow I will. Took off the lifter cover and there's water on the bottom of it, droplets all over, so a fair bit. engine runs fine, starts perfect and goes in and out of gear great. Checked for cracks under the manifold and didn't see anything, but its a bit rusty under there. After the oil change I kept trying the dipstick and it would show progressively worse milky oil, and more and more droplets of water even on the dipstick the more times I checked.
So I'm thinking if there's that much water in behind the lifter cover, and the engine has good compression, runs and starts up fine, and I didn't see any cracks, then what are the odds that my head gasket would need replacing, and the block is still good? I'm thinking that water is getting through the gasket past the lifter, and I also noticed a bit of water under the valve cover as well.
I just bought the boat too so I don't know the history on it if its been stored properly or not.
Oh and here's a pic of the lifter cover. Would this be a cause of the water getting in? liquid gasket around it was falling apart.
