Thread: Exhaust hose
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Old 11-05-2015, 11:05 AM   #16
cardude01
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City: Victoria TX
Vessel Name: Bijou
Vessel Model: 2008 Island Packet PY/SP
Join Date: Nov 2012
Posts: 5,290
Exhaust hose

Quote:
Originally Posted by Ski in NC View Post
Hose can delaminate for a few reasons, heat is most likely. A common problem is at low power the water injected in the mixer does not mix uniformly and hose gets hot spots. This has no obvious symptoms, but can be checked by hand or IR gun at various low power speeds. More common than most think!!

It could be due to an engine overheat event if sea water flow was lost, but usually this is obvious because inside of hose is scorched or blistered. If due to hot spots, the heat damage is in spots, but not all over.

Or the hose could have just failed. It is multiple layers and bonding between them can be iffy.

It would be nice to check the hose downstream of the muffler if it is accessible.

I have an IR gun. Will check for hot spots. Thanks.

The downstream hose access is pretty crappy but I can pull it off the muffler pretty easily, standing on my head. 😢
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