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Smoking Diesel
#9139
03/22/10 09:34 AM
03/22/10 09:34 AM
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Joined: Apr 2003
Posts: 649 Marblehead, MA
dbows
OP
Senior Member
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OP
Senior Member
Joined: Apr 2003
Posts: 649
Marblehead, MA
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So my engine over the last season and a half has started to put out quite a bit of soot. I would say smoke but it does not really smoke more than it has in the past. The difference is that just at fast idle I do not really see any smoke but the transom gets covered with soot. And this can happen with just a hour of fast idle to charge the batteries.
I have changed the oil, cleaned the oil filter, changed the air filter and treated the fuel.
Any other suggestions?
David Bows Mallorca - Hull# 397 ~~~~~_/)~_/)~~~~_/)~~~~~~~~~~~~~~~~~~~~~~~~~|~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~|~~~~~
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Re: Smoking Diesel
[Re: dbows]
#9142
03/22/10 09:49 AM
03/22/10 09:49 AM
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Joined: May 2007
Posts: 2,668 Portsmouth, RI
Rhapsody #348
Past J/30 Class President
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Past J/30 Class President
Joined: May 2007
Posts: 2,668
Portsmouth, RI
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You may have a clogged injector so that the fuel isn't atomized completely. Try pulling the injectors and cleaning the tips. You can probably just clean them up carefully with a wire brush and solvent. In the worst case, you may actually see a charcol briquette stuck by the pin hole where the fuel gets atomized. There is a picture on page 42 in the Yanmar Operators manual on what the spray should look like. A diesel repair shop can "pop test" the injectors.
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Re: Smoking Diesel
[Re: Rambunctious]
#9162
03/26/10 08:40 AM
03/26/10 08:40 AM
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Joined: Apr 2003
Posts: 649 Marblehead, MA
dbows
OP
Senior Member
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OP
Senior Member
Joined: Apr 2003
Posts: 649
Marblehead, MA
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Jason - It is not often that I charge the batteries that way and I like to drive the engine about 2400 rpm. I think I will take my mixing elbow off and give it a clean - as well as give the injectors a quick clean.
Thanks for the help.
David
David Bows Mallorca - Hull# 397 ~~~~~_/)~_/)~~~~_/)~~~~~~~~~~~~~~~~~~~~~~~~~|~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~|~~~~~
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