1999 ficht 200hp

I believe I have a clog in the water line in the upper motor.

I removed lower unit impeller was in perfect condition water will flow through the lower unit. I put a garden hose up to the water line in the motor.. the water will go into the motor but wont come out the pee hole.

does the motor need to be on/ have power for it to come out of the pee hole? I put a lot of water up the hose it seems to go in but will drain out through the bottom/ right back out the water line.

what is there to do to clear a line in the upper motor.