tach jumps at high rpm's from 3000 to 6500

[vicdur93]

My tach jumps at wot it goes from 4000rpm to 6500 rpm so I don't know what i'm really at. what should I look for to fix

 

[Blk-n-Blu]

Re: tach jumps at high rpm's from 3000 to 6500

Is it a Boat?

 

[Bob_VT]

Re: tach jumps at high rpm's from 3000 to 6500

I had the same thing happen this year... I just knew that my motor was not turning that fast! <br /><br />I removed and cleaned all my connections (at the coil and on the back of the tach) and that helped but, from time to time it still happens briefly.<br /><br />I think my tach is slowly passing away.

 

[rybad]

Re: tach jumps at high rpm's from 3000 to 6500

I have never owned a "new" boat, but EVERY boat that I have ever been on (including the two that I have owned) ALL have the tacs jump like that. I have twins now, and my starboard tac does it more than the port. I usually go by my port side and use my engine sync to adjust the other.<br /><br />Also, I usually "tap" the tac, and it will go back down to actaul reading.<br /><br />I'm not sure what causes this, or why it seems to happen to boats more than anything.