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Old 08-03-2002
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engine smoke/vapor

My 1982 Westerbeke-44 blows out water vapor or white smoke starting when the temperature reaches about 145 degrees and levels off at about 170 degrees. These are the temps when the thermostat begins to open and is fully open.
The smoke/vapor goes no higher than about 6 inches above the water, and goes no farther than about 3-4 feet behind the boat at crusing RPM (2200).
There has been no loss of cooling water, although being on a sailboat, the engine isn''t used a lot.
Any ideas?
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Old 08-03-2002
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engine smoke/vapor

isn''t there a problem with the pistons on that model. i believe there might have been a recall on that engine.
eric
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Old 08-05-2002
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engine smoke/vapor

I noticed that "white vapor" on my Perkins M30 occasionaly, esp. when in fog or misty conditions. Worried about it for a while. Checked with a diesel mech. who said "don''t worry"
It is the same white vapor you see in auto exhaust when in cold, damp weather.
If it was white smoke and continued to drift for yards behind your boat, then worry.
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Old 08-09-2002
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engine smoke/vapor

Hi Jeb1

It sounds resonable to me the exhauts expelling together with hot water, some vapor too, particularly at lower ambient temperatures. Also when probably reaching 3.000 rpm or + you will get a lot more white smoke. The latter is more related to excess of force required to the engine.

As said by our colleague, 3/4 feet of white smoke should not be a bad new.

However, is quite difficult to distinguish a normal white smoke from an abnormal one. It seems that the difference is the quantity. The white smoke might come from a broken gasket or even worse a broken cilinder wall. In your case having heat interchanger, this should be clearly noted by the loss of cooling water. Which is not your case.

If the vapor is coming from water in the diesel fuel, then it also be noticed since it will produce starting and running problems.

Regards
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