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Old 19-12-2010, 14:46   #1
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Wet Exhaust Issues

my gas crusier (1988 wellcraft - portofino) has a wet exhaust system that draws freshwater. all of a sudden, i have a louder than normal noise along with some vibration along the straight exhuast piping leading to the muffler.

any first thoughts?

thank you.

tim
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Old 19-12-2010, 18:55   #2
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First you need to clarify.

Fresh water is the water in the engine that is mixed with antifreeze

Raw water is what comes in from whatever body of water you are in.

Raw water is what cools the exhaust and the freshwater via a heat exchanger.
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Old 20-12-2010, 16:01   #3
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it is on a freshwater lake.
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Old 20-12-2010, 16:03   #4
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wet exhaust issues

it is in a freshwater lake.
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Old 20-12-2010, 17:26   #5
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Got cha, Chief.

Is the exhaust manifold loose? Sometimes raw water cooled systems rust out the bolts.
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Old 20-12-2010, 18:04   #6
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Sounds like a "miss or backfire" possibly
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Old 26-12-2010, 20:39   #7
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Good to see a fellow Portofino owner on here! I live on mine in Texas, really love the boat---my dad purchased his new in 87'

I also have a Scarab 38 KV so I am a Wellcraft fan of sorts---


Sorry for the thead drift......
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