Last trip out, my tach started acting up (jumping erratically) although the engine sounded normal. It did it at idle, and at least through half-throttle. (It's jumping as much as 2000 RPMs.) Once I reached full throttle, I didn't notice it jumping. The water was pretty smooth the entire time. <br />To be honest, I don't even understand how these things work (I welcome some education!). Hopefully, it's just a loose wire... Any suggestions are appreciated!<br /><br />'87 Yamaha 90 Precision Blend<br />'87 Ebbtide Dynatrak fish/ski
