[C38] How do I tell if my heat exhanger is not working?

[Max Soto]

That's a different story.  If there is some coolant loss, probably there is probably a leak on the heat exchanger.  It must be removed and tested. 


My boat came without a coolant expansion tank, so if my coolant cap was damaged, all the coolant will go to the bilge.  
I did install a coolant tank. 

Max Soto 
C38 Estancia
+506-8312-1367
Alajuela, Costa Rica 

> On 5/8/2015, at 12:09, 1derful at comcast.net wrote:
> 
> Thanks for your reply.
> If the heat exchanger is dirty will that cause water loss?
> 
> 
> From: "Mark Lewis" <mwlewis2025 at gmail.com>
> To: "Catalina" <listserve at catalina38.org>
> Sent: Wednesday, August 5, 2015 10:35:34 AM
> Subject: Re: [C38] How do I tell if my heat exhanger is not working?
> 
> Another suggestion is to remove the exchange r and clean it. The tubes collect calcification and a wire pipe cleaner can clean it.
> 
>> On Aug 5, 2015 10:51 AM, "Patrick" <1derful at comcast.net> wrote:
>> Thanks for your advice 
>> 
>> Sent from my iPhone
>> 
>> On Aug 4, 2015, at 3:18 PM, Max soto <maxsoto at gmail.com> wrote:
>> 
>> I used my 5424 without a thermostat and a 3" heat exchanger for 12 years and had no problems.. 
>> 
>> Patrick, check on eBay for the heat exchanger... You might find a bargain!
>> 
>> Regards,
>> 
>> Max Soto A.
>> +506-8312-1367
>> Alajuela, Costa Rica
>> 
>> On Aug 3, 2015, at 08:47, Mark Lewis <mwlewis2025 at gmail.com> wrote:
>> 
>> Patrick,  I read somewhere that the cooling system doesn't work with out the thermostat installed. I was going to leave it out to make the engine run cooler, but had to put a new one in.
>> 
>>> On Aug 1, 2015 11:29 PM, <1derful at comcast.net> wrote:
>>> 
>>> Hello,
>>>  
>>> My Catalina has been overheating.  Universal Diesel 5424.
>>> I removed the thermostat........it was corroded and wrapped with debris.
>>> I removed and cleaned the internal water pump.  Also lot of debris.
>>> Put hose in engine.  Water didn't flow but eventually it did.  More debris.
>>> now when I run the engine it is cool until I put on the radiator cap..........then it gets too hot and loses water.
>>>  
>>> Any thoughts?
>>>  
>>> Patrick
>>> 
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