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Old 10-19-2017, 02:23 PM   #4
High Wire
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City: Cape May, NJ
Vessel Name: Irish Lady
Vessel Model: Monk 36
Join Date: Dec 2007
Posts: 4,964
Quote:
Originally Posted by LOOFOO View Post
What causes white smoke in the exhaust of a 135HP Lehman?
Nothing good. Its either water vapor due to overheated exhaust or its incompletely burned diesel fuel.
Easy things to check:
Water flow out of the exhaust.
You should be able to hold your hand on the exhaust hose downstream of the riser and the riser itself.
Clean seawater intake strainer.
Heat exchanger sea water side blockage.
Worn out sea water pump/impeller/missing blades.

Diesel fuel in exhaust will have a strong smell. Water vapor, not so much.
Rebuild the fuel injectors.
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Archie
Irish Lady
1984 Monk 36 Hull #46
Currently in Cape May, NJ
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