lower unit leak test

[dhughes49]

I found water in my lower unit. got a mityvac and pressurized lower unit to 10 lbs after draining. it seemed to hold for 30 minutes and after an hour i could see a small change in pressure like 2 or 3 tenths of a pound . Do I have a problem or did my plugs leak ?

 

[MH Hawker]

Re: lower unit leak test

Pressure is hafe of the test, this is what I use. It may of been the screw seals, that would explain why your not seeing a pressure loss.


15 lbs pressure, 5-6 lbs vacuum for at least 20 minutes. Use soapy water to find leak's if it doesn't hold pressure.

 

[Guest]

Re: lower unit leak test

Pressure is hafe of the test, this is what I use. It may of been the screw seals, that would explain why your not seeing a pressure loss.


15 lbs pressure, 5-6 lbs vacuum for at least 20 minutes. Use soapy water to find leak's if it doesn't hold pressure.

i was at sears looking at that mittyvac thing. as soon as my seals come next week my first stop is to find the leak so maybe i will not have to change all of them

 

[dhughes49]

Re: lower unit leak test

Anybody know the OEM guide lines for lower leak test. I have a merc 2002 150hp (carbed) ?