Have you heard of this before?

[77GlastronMT]

I finally got my boat in the water this year (after 3 years of tinkering). I know that I get water in the oil when on muffs, wanted to see what happens when in the water. I know that was a irresponsible decision but the boat only cost me $350 and a new manifold is $500 and a motor is more than that. Anyway I've had it in the water for at least 2 hours of run time and the oil is still perfect. If I hook it up to the hose I'll have milky oil in about 10 minutes. Any ideas? Thanks.

 

[Rick Stephens]

My bet is your impeller is shot and the hose is pushing water past it under a lot more pressure.

 

[77GlastronMT]

Thanks for the response. Brand new impeller kit was installed when my lower drive was rebuilt.

 

[Fishermark]

The engine will get hotter when you run it at speed and under a load. It will evaporate any water in the oil. (As long as no more water is getting in the oil). Are you sure you still have a problem? It still gets milky on the muffs? That's an odd one. I can't see the impeller having anything to do with it.

 

[77GlastronMT]

Well I've been avoiding the muffs all summer because I was changing the oil after every time I worked on the boat. I just got it in the water a few weeks ago, yesterday was probably my last day this year due to low water levels in the nearest lake and the oil is still perfect. I haven't gotten all the bugs worked out, waiting on a carb rebuild kit (it won't idle). If I get this done soon I may make the trip down to the river and try it again but of course I'd have to run it on the muffs to verify it'll run before I make the trip.

 

[NHGuy]

I'd use lakes til you can trust the engine. It's hard to get back upstream on a shut down or failed engine.

 

[77GlastronMT]

I'd use lakes til you can trust the engine. It's hard to get back upstream on a shut down or failed engine.

Exactly my concern, thanks.