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Looking for an A&P/IA with Mooney experience in Southern California, Inland Empire area. A mobile mechanic would be great. Have several friends that own M20J, M20R, and M20C that are looking for someone that can work on our planes. Please PM me.

No, I got that one figured out. It's what the other guys are mentioning. In front of servo to back of air box.

Anyone know the part number for the gasket that is on the airbox, where the fuel servo mounts onto? I checked the parts catalog and could not find it. Mine had a cardboard-like gasket with no part number on it. I have an 83 M20J with IO-360A3B6. Thanks,

I had the same issue. Tested the alternator and battery, everything was okay. The A&P adjusted the old voltage regulator and it didn't work. I just ended up buying a Zeftronics regulator, no issues since.

The gauge was working prior to install.

The USB has always worked. The breaker only pops when I connect the wire to the fuel pressure gauge and turn on master. If I remove the wire from the gauge, it doesn't pop and USB works fine. It's a 12v system.

I have a panel mounted USB charger that has a 5 AMP circuit breaker. The USB worked correctly. A&P installed a fuel pressure gauge, since I didn't have one, I have the EDM 830 but wanted a pressure gauge also. I'll try to disconnect the wire from the transducer to see if it still pops. Thank you,

Hello, I had an A&P install a fuel pressure gauge that came off a 80s model M20J on my 83 M20J. The reason being was that the stock fuel pressure gauge was removed when the panel was redone and a EDM 830 was installed. Attached is a photo of the back of the gauge. The power wire is coming from the USB breaker to (IGN) side. The center nut has a wire from the transducer and a ground wire, that is grounded to the screw on the airframe. The nut on the left side of photo is the other wire from transducer. Every time I turn on the master, the breaker on the USB pops. I tried several different grounds and it still pops every time the master is turned on. Is the wiring correct? The gauge is installed on the plastic area next to flap switch, so the housing for the gauge is not mounted to metal. Thank you,

Thank you very much.

Does anyone know the part number for this fuel drain valve? Or a good replacement one. It's one of the ones on the bottom of the wings, not the belly. I looked in the parts catalog and couldn't figure out which one it is (Dukes or Christopher). I have an 83 M20J. Thanks,

Yes, I do have vacuum speed brakes. It goes towards center of fuselage and towards the general area where speed brakes are located on the wings.

Hello, would like help to identify a steel braided cable. The plastic coating has come off in some areas and it looked like it was painted over when plane was repainted. Located in the left and right wing wheel well of both mains. It is circled in red. Thank you.

Thank you everyone for the help. It was the the voltage regulator that was going bad. Alternator was at 14.3V with engine running. Change out the VR to a Zeftronics R15300 and it is constant at 14V now.

It was running at 14.1-14.3 V when I left home airport, then high/low annunciator flashing light in cruise. Then landed at another airport about 2 hrs away, volts dropped down to 12.5- 12.1V, and high/low light stayed flashing all way back home. Ammeter was discharging on way there and charging when I was flying back. Has a brand new Concord battery that is on a Battery Minder.

Anyone have a Zeftronics R15300 voltage regulator for sale? Adjusted the vr as per the service manual and on a flight yesterday, the volts were initially going to 14.2 V and down to 12.2 V on cruise. High/low voltage light kept flashing on annunciator panel.