cooling lines......blocked?

[randymonk]

Hi, first timer here. working on a 1975 Seahorse, 25hp. had not been ran in 7 years. bought a manual, tuned her up and she sounds beautiful, ran it with a flusher attached and didnt see water coming from expected holes. i shut it down, pulled the gearcase, impeller is new. How should i check the lines for blockage and should there be water exiting from holes on back of leg half way up. Also what should i use for gasket on install of pump housing to plate.<br />Thanks <br />eager boater.

 

[R.Johnson]

Re: cooling lines......blocked?

What kind of flushing attachment were you using? Muff's won't work on this engine.

 

[randymonk]

Re: cooling lines......blocked?

i picked up a 917tfa, it basicly a taco shell shaped piece of metal that fits over the intake screen just above the prop. It doesnt fit very well so i made some minor adjustments to it. there is lots of water being pushed through the holes on the gearcase. but nothing from the two that are up on the leg.<br />thanks for reply.

 

[CATransplant]

Re: cooling lines......blocked?

Just for grins, put a big trash can under the motor while it's on the boat and fill it with water over the level where the water pump is. I usually go a couple of inches above that point.<br /><br />Fire up. You should see some water come out of those holes pretty quick, once the water passages are full. If so, then your flusher device is not so good.