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1967 6 HP Johnson smoking
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<blockquote data-quote="KMixson" data-source="post: 368080" data-attributes="member: 432"><p>I would be a little suspicious of white "smoke". A good rule of thumb is that oil burns with a blueish tint of smoke, water creates steam with a whitish tint and fuel burns with a blackish tint. Maybe not always but in general. Head gaskets are known to spring leaks with the water escaping the water jackets to the cylinder where it turns to steam and exits the exhaust. The first thing I would do is replaced the impeller to make sure you have a good pumping system and then work from there.</p></blockquote><p></p>
[QUOTE="KMixson, post: 368080, member: 432"] I would be a little suspicious of white "smoke". A good rule of thumb is that oil burns with a blueish tint of smoke, water creates steam with a whitish tint and fuel burns with a blackish tint. Maybe not always but in general. Head gaskets are known to spring leaks with the water escaping the water jackets to the cylinder where it turns to steam and exits the exhaust. The first thing I would do is replaced the impeller to make sure you have a good pumping system and then work from there. [/QUOTE]
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