High RPM indication

[apkp777]

Hello,

I did a first engine start today and had a higher than normal RPM indication (about 4-500 across the various power settings) Idle was about 1000 and what would normally be about 1000-1200 RPM indicated 1800 or so. (I estimated RPMs based on sound)

I have dual P-mags with 12V Standard RPM outputs. both LH and RH are connected.

Anyone have any ideas?

 

[n223rv]

What engine? What is your pulses per rev set at (under ems settings, engine info).
-Mike Kraus

 

[apkp777]

I have an o-320. I could not find in the set up where I could adjust the RPM settings.

 

[apkp777]

What engine?  What is your pulses per rev set at (under ems settings, engine info).
-Mike Kraus

How do you know what the pulses per rev are supposed to be?

 

[n223rv]

Typically the PPR is set at 1/2 the # cylinders. Your o320 should be set at 2PPR.

 

[n223rv]

Typically the PPR is set at 1/2 the # cylinders. Your o320 should be set at 2PPR.

 

[apkp777]

Thanks! I looked in the P-mag installation instructions and bingo, there it was 2 PPS!