Unstable Readings

[badia358]

I had not flown my plane for about 7 months. Finally did a flight and RPM, Fuel Pressure, Oil Temp and Battery Voltage were all over the place. With the RPM, once I go from full throttle to about 2300 RPM, RPM was stable. The others continue to be unstable. Any ideas?

 

[dynonsupport]

Best guess is a corroded ground between the engine and airframe or battery. It could also just be a super noisy electrical system as it's charging a dead battery. How many amps was it putting into the battery?

 

[badia358]

I will check the grounding. The grounding was what I was thinking because during the no activity with the plane there was a great deal of rain, but the plane was in the hangar. Due to all the rain, I thought corrosion may be an issue. I am not sure on the current because one item that I was never able to get working was the AMP reading. This is also on my agenda to fix. Thank you.