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    60hp 4 stroke shuts down above 3000 rpm

    Latest update. Ran an external 12v fuel pump with in line filter and recycled the fuel from the pickup tube to the gas cap port for two hours. Added more fuel and fuel conditioner, ran another hour. Removed pickup tube to check for strainer intact and clean and it was clean. Removed check...
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    60hp 4 stroke shuts down above 3000 rpm

    Removed the vent hose on the top of the built in tank and could blow through it with the fill cap closed. Did not seem restricted at all. Installed new low pressure fuel pump and added a clamp where one was missing on a fuel line, but not leaking. Was not able to water test yet. Noticed the...
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    60hp 4 stroke shuts down above 3000 rpm

    Absolutely true, toss out the ideas because no-one has all the answers. Thankful for any help I can get or suggestions I haven't tried.
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    60hp 4 stroke shuts down above 3000 rpm

    Thank you for the suggestion, I had not thought about the vent. Will check it tomorrow when I get there.
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    60hp 4 stroke shuts down above 3000 rpm

    Thank you for the reply. I had the VST apart and replaced the high pressure fuel pump, bottom screens, and rubber hose from pump to outlet. Looked at the float to verify it worked, and moving it up and down blocked or allowed me to blow through the inlet tube. Did not replace the seat as it...
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    60hp 4 stroke shuts down above 3000 rpm

    Turns out cylinders 2 and 3 must be paired up because swapping the coil wires to the plugs made no difference. Fresh set of plugs, new thermostat, bypass neutral safety switch, no difference. Connected portable fuel tank to bypass onboard fuel tank, and it would run if you kept pumping the...
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    60hp 4 stroke shuts down above 3000 rpm

    Looks like the coil wires are reversed on cylinders 2 &3. There are misc numbers printed on the block, but cylinder order from varous youtube videos indicate 1-4 from top to bottom. Would reversing 2 &3 still run good but shutdown under load at higher rpms?
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    60hp 4 stroke shuts down above 3000 rpm

    Thank you for the reply. New impeller installed a couple years ago and high volume of water out the pee valve. Have not monitored it at speed, will do that. No alarms for over temperature and high water volume led me to dismiss a blocked intake or thermostat but will monitor water discharge at...
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    60hp 4 stroke shuts down above 3000 rpm

    2011 60 hp EFI Bigfoot on a 20' pontoon. Into the shop multiple times. Replaced fuel line, impeller(not related), fuel filters, spark plugs, low pressure fuel pump, high pressure fuel pump, new screens in VST. Starts and runs perfect at low speed. Will run at WOT for a couple minutes, then...
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