83 mercury blackmax 150 water pump question

[CraZyNOTRT]

so i replaced the impeller in the water pump, took it to the lake, and started up, water started shooting out the top exhaust ports and nothing was coming out of the water outlet and started over heating was shut off fast. so i droped lower unit and repositioned the copper pipe that comes out of the water pump, and put lower unit back on, now there is a stream coming out of the water outlet, boat ran for 20 mins and did not over heat.


now the questions
the stream is not steady at low rpms, just kinda spits out water.

mid - high rpms stream is steady

also there is water spitting out of the top right side exhaust port and never noticed before.

is this normal, i never really paid attention/noticed this before.
or should i just not worry about it because its not overheating?

[boats.net]

If not overheating should be ok, water normally is steady stream at tell-tale. May need to replace complete water pump next time.