Posted this in the wrong place, maybe I can get some advice
All right here we go. My 82 Catalina 30
has been slowly loosing flow off the back side exhaust
over the last few months of use. After a couple months of sitting due to an charging
problem. I got that fixed and it seemed that my thru hull cooling water
inlet valve froze closed. I was able to tap it open and noticed that my inlet line and the outlet line from my thermostat had some scale. Cleared my inlet line my line from the thermostat that goes back to the fresh water
inlet,also the line that goes from the thermostat to the exhaust
they had scale but not what I would think would cause blockage.
More info. Its a fresh water system. No filter. I had checked the pump
impellers a few weeks ago to see if it needed changing and it looked good. No missing veins.
So here is what Im dealing with
I have water to the inlet of the pump
, and Id say it flows about a gallon in 3 min.
When I take the outlet to the pump hose off, water will spurt out pretty good. cant say how much but it was enough to move the towel that I used to keep from getting water all over the place.
Now I worried I have plugged in the block because I have taken the thermostat off to see if it was clear,it was, and if I was getting flow back there and I'm not getting anything.
Can my water pump
be putting enough water out to make me think it's working and its getting backed off by the exhaust?
the exhaust and where the water meets the exhaust is clear of any scale. The inlet to the muffler
is clear. I didn't check the outlet of the exhaust but I also ran the motor
without the water line connected to the exhaust and nothing came out. Also my muffler
was dry. I figures it should have something in it but nothing.
Thanks in advance. Still new to sailboats and their motors learning
as I go ...