Tacho needle "flutter"

[Jason1]

Hi John

Have a look at:

Bouncing Tach Repairs

We have had several member mentioned that there tach is not accurate and bounces around. To date this has been diagnosed as two possible problems: Aftermarket ignition system Wiring aftermarket electrical products (fuel pumps) to the coil circuit. Aftermarket Ignition Systems: For those of you who have been having Tachometer problems with an aftermarket ignition system, the following is text from Denaploy, the manufacturer of Luminition. I was directed there by a Luminition person after enqui…

I think it’s pretty common.

Jason