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Old 12-05-2006, 12:10 PM   #1
SAMIAM
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Default Broken 40hp Mercury

Took my 40hp Merc (2 stroke) for a last run before winterizing and noticed white smoke billowing out of the exhaust.It steadily lost power as I barely made it back to the dock before it died.It didn't run out of oil and still turns over but won't start. Nor looking for a fix by mail,just wondering if anyone had a similar problem so I'll know what to expect when I bring it in for repair. Thanks in advance.
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Old 12-05-2006, 12:13 PM   #2
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Quote:
Originally Posted by SAMIAM
Took my 40hp Merc (2 stroke) for a last run before winterizing and noticed white smoke billowing out of the exhaust.It steadily lost power as I barely made it back to the dock before it died.It didn't run out of oil and still turns over but won't start. Nor looking for a fix by mail,just wondering if anyone had a similar problem so I'll know what to expect when I bring it in for repair. Thanks in advance.
White smoke is an idicator of water in the combustion chamber. Sounds like a head gasket.... might need new pistons too. You can do a quick compression test to figure it out. A quick visual check would be to pull the spark plugs.

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Old 12-05-2006, 05:14 PM   #3
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Thanks much,Woodsy.That will be an easy test.
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Old 12-05-2006, 09:20 PM   #4
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Samiam:

I'm curious, what year is the motor?
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Old 12-06-2006, 12:35 PM   #5
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Right around 1998.....not exactly sure ,but it ran great up to that point...Might be trashed if the pistons got fried...Oh well
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Old 12-07-2006, 05:44 AM   #6
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Samiam:

That seems like a relatively new motor to have the type of problems you are describing. I'd be curious to hear what your mechanic says.
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Old 12-07-2006, 09:33 AM   #7
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I'll probably wait until spring to tow it down,but will definately post the diagnosis.Just wanted a few advance thoughts so I don't get ambushed.Thanks
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