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    Suzuki DF90 MAP Sensor & Poor Engine Performance

    Here is what I got... Idles fine on muffs. Having trouble keeping this thing running on the water. At best I can limp along at 1200 rpms but there is plenty of stalling and hesitation before during and after. Possibly of note is that when I try to throttle up, the engine nearly dies unless i...
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    Fuel Pickup Tube

    Anyone else having trouble with the Moeller nylon fuel pickup tubes? I have had two fail on me is as many years. The nylon gets brittle around the aluminum fitting and allow air into the fuel line making priming impossible. Any suggestions on replacements or other remedies? I have a Carolina...
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    Pressure regulator screw in VST

    I am wondering if the fuel pressure regulator screw needs to be a special material since it is housed within the VST? Or can I simply use stainless steel or something else store bought? Suzuki Screw 02112-0510A Thanks
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    Suzuki DF90 Compression Test

    Looking for some additional info on performing the compression test on a Suzuki DF90. I have the manual which includes some photos but I have never done this test before and want to be positive. Specifically, I want to confirm that the motor will crank without the safety lanyard attached...
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    Oil fouled spark plugs Suzuki DF90

    I have a 2007 Suzuki DF90 4 stroke EFI with low hours. Last couple times out I noticed a loss of power when travelling at higher than trolling speed. Motor would run a few seconds at the appropriate speed and then back down for a few seconds and then pick back up. And so on, and so on. Water...
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