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Removed and cleaned Boat carbs
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<blockquote data-quote="swampratt" data-source="post: 4287654" data-attributes="member: 15054"><p>There are many liquids that work here is a link to guys that power their injectors during cleaning.</p><p><a href="https://www.ls1lt1.com/threads/fuel-injector-cleaning.89818/" target="_blank">https://www.ls1lt1.com/threads/fuel-injector-cleaning.89818/</a></p><p></p><p></p><p>I have a 70 Mercury oil injected engine that is a 1998 and no issues with the oil injection part of it.</p><p></p><p>Now if you ever run it out of oil you are screwed.</p><p>There is a gear on the crank that is made of steel and spins a "plastic" gear that drives the oil pump.</p><p>If you run out of oil the lube is not in the engine and it gets hot and melts the plastic gear and no more oil injection.</p><p></p><p>I rebuilt a V6 inboard jet drive 2 stroke mercury engine that was ran out of oil.</p><p>Scored a cylinder buck luck for the girls that owned the boat just 1 cylinder.</p><p></p><p>That was not a fun job.</p><p>It did not take them a month to return with the same issue because they did not fill the oil container and ran multiple tanks of straight gasoline through it.</p><p></p><p>I did not fix it again.</p><p></p><p>In the Mercury shop manual it stated to mix 50:1 oil in the fuel and have the oil injection tank full and run the rebuilt engine on that for 10 hours.</p><p>Buddy did just that no issues.</p><p></p><p>I guess Mercury does not trust the oil injection either.</p><p></p><p>Extra oil in a 2 stroke makes them run lean.</p><p></p><p>I have NEVER ran a 2 stroke out of fuel. IN the mercury manual from 1969 it states DO NOT pull the fuel line and run the engine out of fuel.</p><p></p><p>This will starve the engine of oil and you will have an engine that sits dry and can rust.</p><p></p><p>The proper way is to remove the bowl screws and let the fuel drain from the carbs.</p><p>On my 1975 mercury 50 hp 2 stroke I have always ran 100% gas and Quicksilver oil and never ran it out of fuel and I do not pull the fuel bowl plugs either and those carbs are spotless and run excellent every time I take it out.</p><p></p><p>Go figure.</p></blockquote><p></p>
[QUOTE="swampratt, post: 4287654, member: 15054"] There are many liquids that work here is a link to guys that power their injectors during cleaning. [URL]https://www.ls1lt1.com/threads/fuel-injector-cleaning.89818/[/URL] I have a 70 Mercury oil injected engine that is a 1998 and no issues with the oil injection part of it. Now if you ever run it out of oil you are screwed. There is a gear on the crank that is made of steel and spins a "plastic" gear that drives the oil pump. If you run out of oil the lube is not in the engine and it gets hot and melts the plastic gear and no more oil injection. I rebuilt a V6 inboard jet drive 2 stroke mercury engine that was ran out of oil. Scored a cylinder buck luck for the girls that owned the boat just 1 cylinder. That was not a fun job. It did not take them a month to return with the same issue because they did not fill the oil container and ran multiple tanks of straight gasoline through it. I did not fix it again. In the Mercury shop manual it stated to mix 50:1 oil in the fuel and have the oil injection tank full and run the rebuilt engine on that for 10 hours. Buddy did just that no issues. I guess Mercury does not trust the oil injection either. Extra oil in a 2 stroke makes them run lean. I have NEVER ran a 2 stroke out of fuel. IN the mercury manual from 1969 it states DO NOT pull the fuel line and run the engine out of fuel. This will starve the engine of oil and you will have an engine that sits dry and can rust. The proper way is to remove the bowl screws and let the fuel drain from the carbs. On my 1975 mercury 50 hp 2 stroke I have always ran 100% gas and Quicksilver oil and never ran it out of fuel and I do not pull the fuel bowl plugs either and those carbs are spotless and run excellent every time I take it out. Go figure. [/QUOTE]
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