3Qm30f over heating
- Thread starter akflyr
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All most all of the problems I ahve dealt with recently seem to involve a blockage in the raw water system. That is easy to check. Do you have plenty of water exiting with the exhaust? Are you getting steam coming out with the exhaust? Are the "cheeks" on the heat exchanger cool to the touch? Answers shoud be yes, no, yes.
I had to deal with a blockage right at the nipple in the exhaust manifold where the raw water exits before going into the mixing elbow. A friend had a blockage right in the exit from the raw water pump.
I will be back home tomorrow and post some pictures of the thermostat location.
John Brecher
I had to deal with a blockage right at the nipple in the exhaust manifold where the raw water exits before going into the mixing elbow. A friend had a blockage right in the exit from the raw water pump.
I will be back home tomorrow and post some pictures of the thermostat location.
John Brecher
Thank's John
I am going down to the boat tomorow night. The pics would be great! I am going to back flush the heat exchanger and check the inlet and out lets.As to your questions, I pulled the line off of the exhaust and there is a steady stream of water, no steam and the heat exchanger was warm as I remember. I will let you know what I find.
Mark
I am going down to the boat tomorow night. The pics would be great! I am going to back flush the heat exchanger and check the inlet and out lets.As to your questions, I pulled the line off of the exhaust and there is a steady stream of water, no steam and the heat exchanger was warm as I remember. I will let you know what I find.
Mark
Location of thermostat
Hi,
Attached should be a picture showing where the thermostat is.
Also - to check the flow of raw water, don't disconnect anything, just look over the side at the exhaust and see if water is coming out. I do this every time I fire up.
In the other picture the ends of the heat exchanger that I labeled raw water in and raw water out should always be cool to the touch.
John Brecher
Hi,
Attached should be a picture showing where the thermostat is.
Also - to check the flow of raw water, don't disconnect anything, just look over the side at the exhaust and see if water is coming out. I do this every time I fire up.
In the other picture the ends of the heat exchanger that I labeled raw water in and raw water out should always be cool to the touch.
John Brecher
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