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Fuel Issues with Mercury 60/45 jet
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<blockquote data-quote="JL8Jeff" data-source="post: 407414" data-attributes="member: 12995"><p>This is the method I used to troubleshoot my 40 hp Johnson when it did the same thing you are describing. It would start to stall out, but if I squeezed the fuel ball it would keep running a little longer. It turned out to be the diaphragm in the VRO fuel pump so I converted it to pre-mix and rebuilt the fuel pump portion. It went bad again 5 years later. I think the ethanol is eating up fuel pumps and fuel lines more than people realize. But you should check the connection, the o-ring in the connector, the fuel filter, try a different fuel line with different fuel ball, try a different fuel tank. These are all easy things to test and it's always good to have a backup fuel line anyway. It only takes a tiny air leak to lose the pressure.</p></blockquote><p></p>
[QUOTE="JL8Jeff, post: 407414, member: 12995"] This is the method I used to troubleshoot my 40 hp Johnson when it did the same thing you are describing. It would start to stall out, but if I squeezed the fuel ball it would keep running a little longer. It turned out to be the diaphragm in the VRO fuel pump so I converted it to pre-mix and rebuilt the fuel pump portion. It went bad again 5 years later. I think the ethanol is eating up fuel pumps and fuel lines more than people realize. But you should check the connection, the o-ring in the connector, the fuel filter, try a different fuel line with different fuel ball, try a different fuel tank. These are all easy things to test and it's always good to have a backup fuel line anyway. It only takes a tiny air leak to lose the pressure. [/QUOTE]
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Fuel Issues with Mercury 60/45 jet
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