69 25 hp evinrude milky plugs.

[54bobby]

so bare with me here. my 25 evinrude had a bad clutch dog. my engine has a split case so i did it myself. the entire engine was upside down during the r and r. next time out no top end power. she wanted to go but just couldn't. pulled the plugs on the water and they were soaked with fuel. cleaned them up but still no power. figured being upside down maybe something in carb was out of wack. got home and removed carb and everything looks good. NOW, the top plug is covered in milky oily liquid and looks to be water droplets visable in plug hole. drained lower unit which was only 2 weeks old and totally mixed with water. color was same as on plug. do i have a blown head gasket and a lower unit problem to allow lube to mix with water then enter cumbustion chamber to fowl plug?

 

[jimmbo]

Standing the engine on its head wasn't a good ideal, any water in the cooling system can find its way into the cylinders. Not harmful for a few minutes and if the engine is run again to dry it out. But if some water gets into the crankcase, and it could depending on how the engine is flipped around, it can be bad news.
You might have a stuck inlet valve on the carb, or a stuck float.

"top plug is covered in milky oil" I will take a chance and assume you mean vent plug on the gearcase, not the top spark plug. When you did your clutch dog replacement, what seals did you change? Since you didn't remove the case from the engine, the seals beneath the water pump, or the shift shaft were not changed? Did you use new seals/gasket rings on the drain and vent screws.

 

[F_R]

Turning it upside down certainly could be the cause. Never do that. Any water trapped in the lower unit cavities or exhaust housing will run into the exhaust ports in the cylinders, simply by gravity. That can cause catastrophic damage if left in there awhile. But fear not, just clean the plugs and go run the motor. It will automatically blow the water out. However...........if that is not the cause of the water intrusion, you must find the real cause. Yes, it could be a blown head gasket or a leaking exhaust manifold. As said, the damage will be catastrophic if not corrected. A matter of a few days in fresh water, a day or less in salt water.

 

[54bobby]

Standing the engine on its head wasn't a good ideal, any water in the cooling system can find its way into the cylinders. Not harmful for a few minutes and if the engine is run again to dry it out. But if some water gets into the crankcase, and it could depending on how the engine is flipped around, it can be bad news.
You might have a stuck inlet valve on the carb, or a stuck float.

"top plug is covered in milky oil" I will take a chance and assume you mean vent plug on the gearcase, not the top spark plug. When you did your clutch dog replacement, what seals did you change? Since you didn't remove the case from the engine, the seals beneath the water pump, or the shift shaft were not changed? Did you use new seals/gasket rings on the drain and vent screws.

i do mean the top spark plug.. everything inside carb seems good. float is in exellent shape and sitting as it should. it has no high speed needle valve and oriface is not removable. low speed valve is fine. carb mounting nuts were a little loose so i tightened them down. right now my main concern is where the breech between the cooling passages and the lower lube system that is letting gear lube into the cooling system then into the top. cylinder.

 

[oldboat1]

Need to pull off the lower unit and pressure test it, or take it to a shop and have it tested. Need to find the leak, and fix it.

Powerhead may have gotten a dose of water and gear lube, or water and exhaust stuff, or some combination. After putting it on a stand, I would pull out the plugs, spray in some lubricant (fogging oil, ATF, 2-cycle oil), pull it over a few times, add some more lube -- then let it drain. I don't think this event has anything to do with the carb. Likewise don't think the head gasket is an issue (unless unlucky coincidence). Change out the impeller if the motor is new to you.

kind of want to ask why you inverted the motor rather than taking off the l.u., but guess that might be piling on.... If you have had difficulty removing the l.u., though, might talk about that -- comes up fairly often. If it's a salt water motor, the driveshaft might be stuck in the powerhead -- and you also might have had some salt water drain up into the powerhead and into the bearings (see F_R's post).