Faulty Rpm Indicator

[SkyKing]

Jose,

Like Mark and Paul have stated, your problem isn't the indicators... it's the wiring at the pigtail connections near the magnetos.

Gee, isn't it nice that your local shop wants to quickly send your gages off to the U.S. for overhaul, or whatever, at tremendous expense, when all someone needs to do is check the wiring connections? What a bunch of nice people. YUCK!

We had the very same problem you described on the rear engine RPM indicator, and after pulling the rear hatch found the in-line spade connector was very loose and dirty. Cut the old one out, crimped and soldered a new connector in and then laced the wiring so as to provide for movement and everything has been just fine ever since.

Go check the wiring FIRST thing.

SkyKing