faztbullet
Silver Medal Contributor
All the parts look normal for wear/tear/discoloration. Pistons being scuffed at 6° and 12° is from heat...
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????------" weak spark washing away the oil "------Where did that wild idea come from ?-------Just more proof that oil / lubrication inside a 2 stroke is not well understood !!
Well statement like " weak spark washing away the oil " just make me chuckle a wee bit.-----Many folks just do not know how oil works in a 2 stroke or what happens when mixed fuel goes through a carburetor.
Is it possible an overheat led to the piston scuffing and then then water pump impeller was replaced prior to unloading the boat?
That is funny...Sort of like the poster that stated Merc Inlines run lean on oil on top cylinder due to gravity. Engines will not run on liquid fuel ..it has to be atomized in a gaseous state.Well statement like " weak spark washing away the oil " just make me chuckle a wee bit.-----Many folks just do not know how oil works in a 2 stroke or what happens when mixed fuel goes through a carburetor.
Heres the red flags popping up..When he bought the boat a few years ago he was told the motor was rebuilt. It has standard 3.5" bore.
What do you think about the possibility that the end gaps weren't checked?Rings rolled due to carbon build up...chitty oil or to cold..Does piston#2 have a number etched on crown ???
Rings rolled due to carbon build up...chitty oil or to cold..Does piston#2 have a number etched on crown ???
The #2 is top on port and #3 is bottom on starboard.----@ different thermostat / poppit valves in the picture.-----Were the head gaskets on correctly , yes , no , not sure ?
The one on the left was installed correctly.
A new gasket would have all the words for you to read and heed.