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    • Tach falls off at high rpm

      This topic has 5 replies, has 4 voices, and was last updated byClark Leighs 2 years ago

      August 16, 2021 at 2:19 pm I’m running 2001 6bta 330hp in my 4087 Bayliner. Anything over about 2000 rpm, my starboard tach on the upper helm drops off erratically and as the RPM increases the tack drops all the way to zero. I checked my tack in the cabin and it seems to work fine which tells me the sender and the connections to the engine are OK? Another clue is after about 16 hours on the anchor with the house batteries providing a little lower voltage I noticed both st…

      Started by: Times A Wastin’ in: Instrumentation & Electronics

      5 Replies
      August 27, 2021 at 5:30 pm I realize that there may be more to this as the lowers seem to be ok and just the uppers goof off but I’ll add it regardless. Just my $0,02 . I am not who figured this out. If you have a sensor that reads the flywheel teeth then the sensor face can collect rust particles. THose particles can stick. When they stick they interfere with the tiny current pulse the teeth generate as they whiz by the sensor face. At lower revs maybe the se…

      Last Post by: Clark Leighs posted: 2 years ago

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