coolant in raw water system

michael tero

1st Mate
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Mar 18, 2012
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eliot maine
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25 DN KELLY
hey guys i've got an isuzu 260 h.p model # a-6bg1t engine . i'm getting coolant into the raw water strainer /intake. any help sending me in the right direction for finding the leak would be greatly appreciated ! i've got a call into a diesel mechanic but will continue to try to run this down myself as well . thanks much.
 

plowin

Admiral
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Dec 14, 2011
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Newbury
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33' flowers
How was it winterized? If the exhaust elbow is "freshwater" cooled it may be cracked and bleeding back.Put a pressure tester on the expansion tank and put a little (10psi) pressure in it and see if it holds overnight.
 
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michael tero

1st Mate
Joined
Mar 18, 2012
Posts
100
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126
Location
eliot maine
Boat Make
25 DN KELLY
crack in the heat exchanger.

had the heat exchanger pressure tested, now just to find out what it's gonna cost.
 

Dslpwr

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Mar 27, 2014
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Columbia Falls
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35' Mitchell Cove, 13’ Whaler
Send me a picture I just might have a used one on the shelf in the storage box
 

michael tero

1st Mate
Joined
Mar 18, 2012
Posts
100
Likes
126
Location
eliot maine
Boat Make
25 DN KELLY
heat exchanger leaking

had the heat exchanger tested and it leaks. got a new one on the way . thanks for the input! SO MUCH FOR ALL THE TOYS I WANTED..:(
 


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