lower unit past pressure test, oil is still milky

[ggreen]

I run a evinrude 30 I believe the year is 1995. I have had the lower unit pressure tested twice at a marine. Both tests passed, however after a day of running the motor the oil comes out milky. I metioned this to the mechanic after the fist test. Problem not resolved. Any ideas what could be causing this? I bought the engine last summer so I don't know the past history.<br />Thanks

 

[Dhadley]

Re: lower unit past pressure test, oil is still milky

Welcome!!<br /><br />Passed the pressure test -- what about the vacuume test? He should have done it the first time and certianly the second time. Or did you just specify the pressure test?

 

[Terry H]

Re: lower unit past pressure test, oil is still milky

One other thing to look at are toe gaskets/orings on the fill and vent screws...chances are your mechanic is putting the old ones back in after the test...just a minor thought

 

[ggreen]

Re: lower unit past pressure test, oil is still milky

Originally posted by Chief 101:<br /> One other thing to look at are toe gaskets/orings on the fill and vent screws...chances are your mechanic is putting the old ones back in after the test...just a minor thought

 

[ggreen]

Re: lower unit past pressure test, oil is still milky

Originally posted by Chief 101:<br /> One other thing to look at are toe gaskets/orings on the fill and vent screws...chances are your mechanic is putting the old ones back in after the test...just a minor thought

Thanks for your imput. I did change the orings on the two screws. At the marine I was told that evinrude switched orings on the fill and vent screws then changed back to the oringinal style?

 

[Terry H]

Re: lower unit past pressure test, oil is still milky

ggreen...take heed what Dhadley says...he knows his stuff...

 

[ggreen]

Re: lower unit past pressure test, oil is still milky

Originally posted by Dhadley:<br /> Welcome!!<br /><br />Passed the pressure test -- what about the vacuume test? He should have done it the first time and certianly the second time. Or did you just specify the pressure test?

 

[ggreen]

Re: lower unit past pressure test, oil is still milky

Originally posted by ggreen:<br />

Originally posted by Dhadley:<br /> Welcome!!<br /><br />Passed the pressure test -- what about the vacuume test? He should have done it the first time and certianly the second time. Or did you just specify the pressure test?

Thanks for reply. I checked my bill and they did a 2.5 hr pressure test and a 3.5 hr vacuum test and found no leaks.

 

[ggreen]

Re: lower unit past pressure test, oil is still milky

I checked my bill and a pressure test was done for 2.5 hrs and a vacuum test was done for 3.5 hrs. no leaks where detected.