I sailed the waters of the PNW for 25 years. My last boat (12 yrs) had a Universal M25XP. I never had this issue. Perhaps this is related specifically to the BETA?

Thanks, I'll be curious to see if you have a similar issue!

Glad you liked it

Yes, it appears this is not an uncommon issue. I've read of a couple owners that have replaced the Stainless crossover tube with silicone hose in an effort to address the issue.

Yes, the tubes and thermostat were all clean. The blockages were only at the silicone hose connections to the crossover pipe that runs from the raw water pump over the top of the engine to the back of the heat exchanger. Very strange, perhaps there was some residue in the crossover pipe leftover from manufacturing that settled out at those two low points?

Just over 60 hours.

Good idea! I still have the larger pieces, I'll see if they will burn.

Thanks for watching! I mentioned in the video, I did try soaking the material in vinegar for a couple days to no effect. I found it interesting that the two deposits were only at the ends of the of the crossover pipe connecting the raw water pump to the heat exchanger inlet. There was no other buildup to be found within the pump or the heat exchanger. Makes me wonder if the material may have been some sort of machining residue that was left in the crossover pipe and settled at those two low points. The engine had only about 60 hours running time when the issue developed. I'm at about 100 hours now with no evidence of a return of the issue. The diesel filter is a Racor/Parker #445R10. I purchased it from Fisheries Supply in Seattle.

Westsail 28 STARWHITE Thanks Great channel, great boat , best of luck!

As an old diesel fuel injection mechanic; I could not count how many of those filter / primer units I have had to repair / change over the years. (I used to run a diagnostics workshop; so basically fault finding) Those primers love to fail and draw air into the system at the most inconvenient moments. If I had one on my boat; it wouldn't be there for long.

Yes, it was. The connecting hoses are silicone and much of the blockage was within those hoses. I can't think of any reason why that might matter. I spoke with 3 different BETA dealers and they all said it was strange.

I NOW check the overboard discharge everytime I start the engine. But at the time of this incident, I did not. I just did not expect such an issue with a new engine. So much for expectations!

@@Westsail28 Do you shut your cooling water in take valve when your in port?

@@redwood1957 Not normally, but I will close it when I'm doing work on the engine.

@@Westsail28 I close it when not sailing. Adds separation from sea water. Pre engine start is woc. Water oil cooling check are all good to go

Yes, I've found that I only get about 4/5 months per engine zinc. They are quite small, roughly 1/4" diameter and an inch or so long.

I have no solution except to clean it annually.

No, these build ups were before the zinc, in the raw water inlet line. The zinc on this engine is on the outlet side of the heat exchanger.

Unusual to get deposits at the raw water pump. Just clean annually.