1rider
Lieutenant Commander
- Joined
- Feb 28, 2012
- Posts
- 129
- Likes
- 84
I pulled the heat exchanger (wasn't fun getting it out) inspected and cleaned it. It really was in great shape and only found a little build up where the zincs are situated by the honeycomb.
Reinstalled everything with a new thermostat, filled up the system and still have an over heating problem. I did learn a couple things however...
1) I left the cap off the degas bottle to monitor the water level, which I added to twice until it stopped dropping. Ran until the overheat warning, about 212 degrees or so and shut it off. On this system the degas bottle is part of the circulation loop in the cooling system (suppose to help avoid air trapping) so because I had the cap off I was able to check the temp of the water...it was cold, not even warm!
2) the heat exchanger was completely cold as well as was the water coming out the exhaust.
3) once it reaches temp to activate the thermostat I noticed that the water started overflowing out of the degas bottle leading me to think that pathway is blocked?
So right now I think my problem is one of a couple things; either I have some debris creating blockage, or something is wrong with the fresh water pump. ( although it is belt driven)
I would like to try removing all the hoses I haven't already and trying to use water pressure from a hose to clear or ensure there is nothing blocked. Is this a bad idea?
Any other thoughts on my next direction?
Here is a waterflow diagram-
And the engine-
Reinstalled everything with a new thermostat, filled up the system and still have an over heating problem. I did learn a couple things however...
1) I left the cap off the degas bottle to monitor the water level, which I added to twice until it stopped dropping. Ran until the overheat warning, about 212 degrees or so and shut it off. On this system the degas bottle is part of the circulation loop in the cooling system (suppose to help avoid air trapping) so because I had the cap off I was able to check the temp of the water...it was cold, not even warm!
2) the heat exchanger was completely cold as well as was the water coming out the exhaust.
3) once it reaches temp to activate the thermostat I noticed that the water started overflowing out of the degas bottle leading me to think that pathway is blocked?
So right now I think my problem is one of a couple things; either I have some debris creating blockage, or something is wrong with the fresh water pump. ( although it is belt driven)
I would like to try removing all the hoses I haven't already and trying to use water pressure from a hose to clear or ensure there is nothing blocked. Is this a bad idea?
Any other thoughts on my next direction?
Here is a waterflow diagram-

And the engine-
