97 3hp Johnson oil in water

[Dave Turner]

I have a 3hp 1997 johnson that i was testing in a tank of clear water to make sure impeller was pumping water ok. I noticed a light oil residue in the water and around the side of the tank after running motor for a few minutes. I did not notice any leakage while motor has been on stand the in my garage. Thanks for any help!!

 

[tashasdaddy]

Re: 97 3hp Johnson oil in water

you are running a 2 cycle engine. the exhaust and unburnt fuel goes into and on the water.

 

[WillyBWright]

Re: 97 3hp Johnson oil in water

Welcome to iboats. <br /><br />That's unburned oil from running. They're horribly inefficient at low RPMs. A lot of the fuel that's sucked in goes straight out the exhaust wihtout burning. But they are very efficient at high RPMs and there is far less unburned fuel. The unburned gas evaporates and leaves behind the unburned oil which floats on the water and clings to the motor and pail. Didn't take long, did it?

 

[Dave Turner]

Re: 97 3hp Johnson oil in water

Hey guys, Thanks for the quick reply. I was hoping that i wasn't polluting the evironment with oil. I am not much on 2 strokers but a big thank you goes your way for your help.