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    Sound check in Mercury 115

    Just put a new Voltage regulator in. Fires right up and showing 14.3 volts at the battery while running. Tach works now. Would like to get some input on how the engine sounds. Skips, stalling, anything? Thanks
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    Mercury 115 Tachometer Problem

    Turns out it was the rectifier/VR. Put the new one in and tach fired right up. Voltage at the battery while running is now 14.3. Hopefully this resolves some recent issues. Also found a completely corroded positive battery wire from engine to battery. Replaced with 4 gauge starter wire and...
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    Mercury 115 Tachometer Problem

    Thanks for the info. When testing the gray wire, would I just post my black multimeter lead onto a ground somewhere?
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    Mercury 115 Tachometer Problem

    I’ve read so much in this already, with many differing and confusing suggestions on testing. How would I volt test it? As mentioned, I’ve tested on the battery posts while running and non running.
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    Mercury 115 Tachometer Problem

    Pics at VR
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    Mercury 115 Tachometer Problem

    Pulled cowl off. Red and yellow look burned. Small crack in VR (identified by screwdriver). Thoughts?
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    Mercury 115 Tachometer Problem

    Both tests at top of battery posts
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    Mercury 115 Tachometer Problem

    Just checked voltages on battery and tach. 12.4 at battery. 12.36 at tach. I think I have a regulator or stator issue. Not running battery shows 12.4 volts. Engine running… volts drop to 12.35. Bites tests are at top of battery posts.
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    Mercury 115 Tachometer Problem

    It’s a 1996 2 stroke.
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    Mercury 115 Tachometer Problem

    Tach started last summer with erratic readings. Started boat up yesterday and seemed to be working fine. Then started drifting and dropping. Would jump around when tapping on screen. Not working at all today. Checked voltage at the tach and getting 12.36 volts at idle. Any suggestions appreciated.
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