Mark Langford wrote:
>I hooked up my Karmann Ghia's tach to it today and ascertained that both EIS >and Tiny Tach our way out in the weeds. The Tiny Tach reads about 5000 rpm >at idle, about 7000 at 2000 rpm, and then it goes back down to 5000 at 3000 >rpm! The EIS is off by some wierd integer number, but it fluctates so much >it's hard to guess what it is. The Ghia tach got me through the day of >testing though (yes, I know I have to multiply by .67), and I proved that >it's putting out good power and with a good mixture. I also found out my >oil cooler leaks. > > My father had the same problem with the tiny tach on a motor home with a high energy ignition system. The problem was too much signal. He solved the problem by reducing the number of turns around the wire. I believe he was down to one loose turn to get the proper reading. Mike Warner
