140 Four stroke

[dparvin]

I have a 2003 140 which at about two hundred fifty hours was sold the wrong oil filter which went on but didn't seat properly and pumped the oil out. The oil alarm went off and I shut it down. I put right filter oil and new oil ran it a little bit over the next year then realized that water is getting into the oil. Does anybody have any idea what the problem is coming from. The low oil pressure shows on the computer readout but does not show a overheating incident.

[catacom225]

Water in oil

There are several ways water can contaminate oil, I would start with the oil cooler, simple job just remove the nut and pull apart only a few O rings separating the water from the oil
I would recommend anyone with an oil cooler to regularly inspect this, mine was a mass of salt. the inlet and exit points are so small so a tiny piece of crap could easily block the flow

[dparvin]

Thanks I am going to have to order me a manual. I do not know how to check the oil cooler. As soon as I get it I will respond again thanks

[WEDOCQ]

Mine was the worst case scenario. The engine holder corroded (google engine holder corrosion), causing some of the walls of the holder to become so thin it let water pass into my crankcase. Not good.
-Shawn

[dparvin]

I just pulled the steel plug and have no corrosion at all It has about 300 hrs on it but only in nice clear water here in California, no salt use. A relief. Does anyone know where to ger an aluminum replacement plug

[nelbur]

Get the aluminum plug from www.g o l d plug.com. Eliminate the spaces I added to keep the forum from eliminating the word.

[redlowrey]

Thanks I am going to have to order me a manual. I do not know how to check the oil cooler. As soon as I get it I will respond again thanks

If your oil cooler has not been apart before it can be a bit hard to get the body off the o rings. Usually when a oil cooler fails it will pump oil into the water jackets and out the prop and empty the sump. Tell tail signs an oily slick at the prop. Your problem sounds like corrosion, cyl head or gasket, or engine holder.

[dparvin]

I ordered a new oil cooler and extra o rings to rebuild the old one The o rings had some build up on them and they hard on the bottom and more plyable on top . Just hoping this is the problem. I have a jet pump on it and wondering if the water pressure might be higher while running. I have also ran it with a water hose attached and my pressure is 50lbs. I don't know what the outcome will be but hoping for this cheaper fix. I will know in a few days and will post the results. I also removed and ordered a new plug

[dparvin]

Got the new oil cooler and have ran it for about an hour at idle to about 3500 rpm and no signs of water in the oil. Thanks for the advice and for the cheap fix. One dealer told me it would have to be torn down and checked for a broken block and when asked about procedure never mentioned the oil cooler.

[dparvin]

I took the motor out to the lake and ran it for an hour or so and up to over 5000 rpm's I checked it every 15 or 20 minutes and did not see any signs of oil and went to dock and headed home. Couple hours later looked at it and it shows signs of water in the oil. What Im wondering can i bypass the oil cooler and run it for a while. I have a jet pump on the bottom and am wondering if the pump might be pumping to much pressure into the engine and causing the water in the oil. Is the oil cooler designed for low rpm (idle) or for high rpm. Thanks for any help

[Moonlighter]

Dont throw the towel in yet...... It might just be some residual water in the block from the oil cooler issue.

Would be worth doing another oil change and running it again and check again.

[dparvin]

I have got some advice on bypasses the oil cooler and running it midrange for a while and see what happens. My view is that the cooler doesn't do much from the looks of the inlet and outlet size I will monitor the temperature light while running it.