Pressure Testing Lower Unit

[geowhiz55]

Has anyone pressure tested a lower unit? I have a 80hp 4 stroke and the spec's call for a pressure of 14.2lbs for 10 seconds. I pump up to 14lbs and unit drops down to 12 lbs in 10 seconds. I assume that a drop is to be expected, but how long before the pressure drops. Is this 2lb drop ok? Should it hold 14.2 lbs for 1 hour? I hate to ruin the lower unit. I did replace the water pump and lower seals. No evidence of water in lower unit oil. What do think....

Thanks Geowhizz55

[bumperfood]

remove prop, drain lower unit remove lower unit, pump to 14psi. through either plug. Immerse in water filled bucket-- leaks will show up.

[robert graham]

Sounds like you may be over-thinking this, and really don't have a problem...especially if there's no water in the lower unit...maybe just go fishing? Good Luck!

[geowhiz55]

That's what I decided to do. Go fishing. Then check for water in oil. Worst that could happen, I wouldn't catch any fish....You're right, I think to much....

Thanks......