Logwes21

Late to the chat here but just had this exact same thing happen to me. Idle oil pressure once on ground around 14 psi and during descent dropped to about 4 psi. What kind of inspection and repair did it require. Mine is currently at the shop looking for the leak. Any other information appreciated. Thanks

I’ll look into it. Thing is that every other operating gauge (cylinder head temps, egt, tit, oil temp) all remained at normal operating levels.

Nothing yet. Had to leave it with a local mechanic there. They cleaned it up and ran it up but couldn’t find anything. Next step is a full power run up for a good 20-30 min I guess.

Hi All, I purchased a 1984 Mooney M20K within the past 6 months and it has been great. However, I recently had a flight in CA where I took off, climbed and cruised for about 20 min, and then noticed that my oil pressure was beginning to drop. I was about 15 min from the closest airport so I diverted and set up to land. By the time I landed the oil pressure was at 3 psi, but rebounded to about 14 psi once I got on the ground. Taxied over to the closest maintenance facility, popped the cowlings, and discovered that I had lost about 3-4 quarts of oil during the roughly 30 min flight (most of it on the belly pan). Everything in the engine was a little wet as it usually is but there was no distinct leak location. The left side of the bottom cowling seemed to be where most of the oil had collected. My first thought was maybe a push rod seal on cylinder 4 but I’m not sure if it’s capable of pushing out that much oil. Wondering if anyone has had something similar happen or any idea on what the cause/leak location could be. Continental TSIO-360-LB with approximately 500 hours SMOH. Thanks!