Moomba MAX raptor 400, coolant issue
It's the end of the season, sadly. I bought my Max like 6 week ago and i had a strange issue with my coolant system. When i first did my 25hr i dropped the oil and changed the gas filtrer as needed and i've checked the prestone level to see where is it and surprise, no prestone in the bowl. there is no leak, the motor is shiny.
I called Sport Marine and they told me that maybe there were air bubble in the system, so full it back up and now after another 30hr, there is still no prestone in the tank..
Any idea ? thanx
Moomba MAX raptor 400, coolant issue
Used black stone a lot. Great lab, however coolant internal leak is very easy to see in oil, it turns to chocolate milk pretty quick (no pun intended).
You can have an internal coolant leak that will not mix with oil directly into the combustion chamber and that will cause white smoke and a sweet exhaust scent. Could be difficult to detect on a boat......
I would agree with the op that it’s not likely a internal issue, but a slow external leak at a hose connection.
On an all black engine, a slow external leak would be tough to see as the heat of the engine would dry a slow leak quickly.
Might need to add a UV dye and use a black light while pressure testing the system.
I am sure your dealer will happily handle this for you under warranty free of charge.
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