View Full Version : new distributor, now tach problems

06-14-2012, 06:09 PM
Ok, I got the pertronix igniter 2 distributor and flame thrower coil. New plugs and wires. Engine runs great.

Now the tach is reading high. It reads about 2000 at idle. I removed the ballast resistor as the directions indicated. All wires are connected with crimped terminals.

Anybody have any ideas? Boat is an 86 with 351 Indmar.

06-14-2012, 06:30 PM
sounds like the tachometer lead is installed incorrectly, is tach lead on the neg coil stud?

06-14-2012, 08:27 PM
It is on the negative coil lead. I rechecked all connections. Everything looks good. The tach was never an issue before.

I read on another site that this is a somewhat common problem. Something about the signal from a point ignition being different from an electronic one. Maybe it is time to upgrade the tach?

06-15-2012, 12:20 AM
At this point I would call petronix and get their input.