dc0341

I have an 83J with a EDM 830 installed. With the engine running and while in flight, the volts read 12.9 -13.2, this is also the same while on the ground with master turned on. The ammeter needle jumps around while in flight but settles to center. The plane has a brand new Concorde battery that was replaced 2 months ago and it's on a Battery Minder when hangered. Does anyone know if the EDM830 measures the battery voltage or the system while charging? From what I've found, the voltage should be higher with engine running than 13.2. I was going to check the ground cable on the battery and clean it, then the voltage regulator. It has been over 14 years since the alternator and voltage regulator has been changed. But the log book entries doesn't specify the make or model that were used. If I do need an alternator or voltage regulator, what is recommended? I was looking at the Zeftronics vr but did not know the specific model number. Thanks,

Hello all, I recently had my vacuum pump replaced in my 83 M20J with an overhauled Tempest pump. After starting it up today, I noticed a large puddle of oil coming from the front nose gear door area. I took off the top cowling and noticed oil near the vacuum pump, near where it bolts onto the engine and below it. I checked all of the nuts on the pump and it was tight. The A&P also put a new gasket when replacing the pump. I checked the oil and noticed there was almost none left. During preflight, there was 6 quarts. Any suggestions on what it could be? Thanks.

Hello all, I recently purchased a 83 M20J. Once I got it back home, I noticed it did not have a fuel pressure gauge. The panel was redone about 2 years ago and the only gauges that remain are the fuel quantity gauges. I have a JPI EDM830 but it does not read the fuel pressure. Could I swap out the manifold pressure gauge from a M20F that has both manifold/fuel pressure readings and install it in my J? I don't want to get another gauge if I don't have to because I don't want to cut into the panel. Thanks in advance.

Hello all, I'm looking for an A&P to do a pre purchase inspection in the Austin, Texas area within the first few weeks of January. Called several places, SWTA and Dugosh and they are not available. Can anyone recommend an A&P that is familiar with Mooneys. I am purchasing an M20J. Thanks,

I'm looking at the M20Js and came across one that has turbo. For those who have owned one or flown one, what are the pros and cons for a turbo M20J?

Hello, I'm looking to purchase a M20J, which is currently located in Mena, Arkansas. Can anyone recommend an A&P familiar with M20 that can do a pre-buy inspection that is close to the area? Thanks,