Costa Leite

Dear Mooniacs In our 1998 M20J Allegro, s/n 24-3429, we installed in 2020 the Power Flow Exhaust System. I now realized that we still have the original and complete exhaust system, removed at 1.400hrs and 22years AirframeTT. Today I took the pictures in attach of the original Exhaust System that I keep in my garage. Do you think this is useful to you? If so, would you like to make an offer via PM?? Kind regards Fredi +351 910 690 093

Our mechanic already did some troubleshooting and didnt found any loose electric connection. He says the transducer is no longer working correctly.

Hi Richard For my 1998 M20J I am looking for a Fuel Pressure Transducer on Sigmatek gauge. I believe your Ovation has the same Transducer. Since you are removing the engine gauges, I wonder if the Fuel Pressure transducer is for sale? Cheers, Fredi

Thanks Skip! Do you have any idea what specs do I need to order? Output connection? Accuracy? etc... And where can I find the adapter? Many thanks! Fredi

I need a Fuel Pressure transducer for 98 M20J.

Dear Mooniacs Our 98 Mooney M20J Allegro is showing a fluctuating Fuel Pressure indication on original engine gauges. On startup, taxi, take off and initial climb everything is fine, and then a few minutes after airborn the needle starts fluctuating, and then some times the needle is completly dead showing "zero" pressure, and afterwards sometives gets alive again... without any regular behavior. The fuel pressure is obviously good (engine runs smooth all the time and fuel flow on Shaddin is perfectly normal), so I think the problem is with the Transducer, and my mechanic agrees with me. I think these Transducers are hard to find... any idea how can I solve this situation without moving to digital/glass instruments? Many thanks in advance for your comments. Fredi

Thanks all to your opinions. I send an email to PF with exact same photos, vídeo and descriptions, and below it’s PF answer to this issue: “It sounds like the issue that is causing the worm gear to not work properly is due to the backlash, which can not be fixed in the field. If the backlash is not set properly it will cause the worm gear to strip. We highly recommend you send them in to us for repair because if you purchase and install the worm gear, it will eventually have the same issue.”

VIDEO OF THE CURRENT PROBLEM: https://share.icloud.com/photos/016_JX7QGu8JQc8RFj64sS5xA

In our 1998 M20J Allegro (1500Hrs TTAF), equiped with PF SpeedBrakes since new [P/N 540S108A – 100 Series – Cartridge Assy 28 V (P/N 01577) RH/LH], we have been dealing with some problems on the brakes along the years. Sometimes they do not retract on full down position. Sometimes they just go up halfway. And this happens sometimes on Right side and sometimes on the Left side. Maintenance from our mechanic solved the problems, including new Gears replacement on both sides in 2015 @ $262,86 TOTAL for the 2x gears. A couple of years ago, after reading several topics here on MS, we realized that the SpeedBrakes needed Aeroshell22 lubrification on every Annual Inspection, and so our mechanic started doing the SpeedBrakes ICA preventive maintenance, which helped keeping them in working conditions for a longer period of time than before. I also noticed that these problems usually happens after a wash, which make sense according to some posts here referring that water will remove the lubrification. ( I started to protect the SpeedBrakes with tape every time I wash the aircraft now. And also, I am ordering dry wash products form Aerocosmetics to avoid these washing issues on SB). Right now the RightSide SpeedBrake is not going up. Today I took it out and confirmed that the motor is working, but the gear is not connecting. I did a quick lubrification but did not solved anything. Maybe the gears are worn out again?? Seems not possible because they were replaced only 7 years ago we do not use the brakes very often. Any thoughts what could be the problem? Did someone already had this issue that can share the solution? I know PF will do an OVHL for about 2000Usd, but I would prefer to try to solve this issue by myself before spending so much money!! I send in attach some pictures and videos. Thanks in advance for your help. Fredi

Thank you! I am already chasing it

Hi All My efforts to find 1x OilSender PN NORWICH 102-00066 for a 98M20J Allegro are not getting any positive result. It’s easier to find Rochester Senders for earlier M20 models, but impossible to me to find Norwich senders. Does anyone have one? Or does anyone have a late J or K, or early Ovation, that is going on digital engine instrument upgrades and might have these spare parts? Many Thanks! Fredi

Actually that was a different part number. But I already send and email to Commodore, but didn’t get any reply yet. I will give them a call tomorrow.

Exactly! Norwich of course. Thanks Clearence for the warning. Do you know where I can find one? I would appreciate very much any help on this chase!