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    2008 Optimax 150 starts missing at 6mph

    Re: 2008 Optimax 150 starts missing at 6mph another problem found this week also see posting on ethanol fuel cracked hose to fuel regulator
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    Mercury 2007 90HP 4-Stroke EFI Fuel Problem

    Re: Mercury 2007 90HP 4-Stroke EFI Fuel Problem ETHANOL> get used to it> change all fuel hose>I know this is old but> It happened to me 2 times> We solved it in testing for 2 months> my motor is 2007,115-4stroke EFI> in the fuel module is a vacuum hose to the fuel regulator. Under "high...
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    mercury 115 starts hard

    Re: mercury 115 starts hard check your fuel line from your tank. This is what I found this week. replaced with 3/8" ethanol proof ,fuel injection rubber hose from auto parts store.
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    Mercury 250 Verado Problem

    Re: Mercury 250 Verado Problem the fuel parts are from mercury not yamaha. I also found the input hose from the tank failing on the inside. fixed with 3/8" ethanol proof fuel injection hose from auto parts store ~$3/ft. You can look up pictures as parts using your model and serial on Iboats...
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    90 hp 2006 mercury efi 4 stroke only idles

    Re: 90 hp 2006 mercury efi 4 stroke only idles have you checked your fuel module. it has a fuel regulator, walbro injector pump, walbro intake pump and intake pump float. it may be a cracked fuel regulator line in the tank. mercury service bulletin...
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    Ethanol, 4 stroke, EFI fuel module problems, 2007 + lock down engine

    how many have had the cracked vent tube inside the fuel module? mine locked down twice. 1st time sheared the flywheel & starter teeth under warranty filled lower cylinder with fuel. Second time filled lower cylinder with fuel. It has been reported some engine run rich for this problem if crack...
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