Tach Issue/problem

[firediver32]

On my last few cruises every so often the tach would suddenly shoot to up to 5000-6000 rpm, then back to where it was. The engine itself did not seem to race or change..... I'm guessing an electronic's problem?? any guesses? I'm open to suggestions.

Dan

[Shellback]

Might help you you gave some specifics, outboard, inboard, make, model, year, etc? Outboards work off the stator on the flywheel, and inboards work off the coil.

[firediver32]

Its a trophy 2352 IO. Its the 5.7l v-8 if that helps.