Heat Exchanger issues

[Bay_sailor]

Hello all, new to the Catalina group.
I have a heat exchanger on a M25XP that may have a possible internal leak. What would be the symptoms if it were leaking internally? My engine temp has been a pretty consistant 170 180 deg. I have ordered parts through Keller Bros. Tractor in PA. but this may obviously be an expensive fix. It does not appear to be losing A/F coolant
Thanks in advance for any advice on this

 

[Steve Dion]

You may also want to check out the head gasket.

 

[Maine Sail]

What are the symptoms?

 

[Stu Jackson]

Yes, you need to tell us more. A new HX is about $300. What makes you think you have an issue?

 

[sailaway78]

Pressure test

You can get a pressure tester and find out easily, at least for the engine side. Just put some pressure in it and watch for a pressure drop. If it's leaking anywhere between the fresh and the raw water side, should show a pressure drop, unless it is just raw water leaking out. Like others I wonder what makes you think you have a leak. You stated it's not overheating, and apparently not loosing coolant.