DaMooneyMan

Thanks for all the input. And no intercooler or waste gate yet. I did go out to the Mooney the day after started up fine. Pulled the mixture on shit down as usual no issues. I did notice I had the fun pump on shut down the previous night. I turned the pump off before I started the engine And turned it off no issues .... I talked to the mechanic that changed the oil. He told me the reason for the engine not shutting down could be due to fuel pump being on. (I never mentioned that I had it on so he may be spot on here). Still does not exactly explain why the engine sputtered at altitude when leaning out. And why the engine died on the taxi way. Ran the problem past a Piper Pilot owner/friend he is saying since I run ROP and I may have the plugs fowled. My TIT say 1650 is peak. I get to 1350 usually. However I get good GPH at that temp. Long story short I'm having the A&P check the mixture control setting and check the plus to see if they are fowled.

Thanks fellas. I have a continental TSIO 360- LB a M20K 231. On the run up and flight from Houston to Corpus everything went fine. All the needles were dead center in the green enroute. It looks great a lot better than the previous 25 hours. On the run up at Corpus no issues. Just noticed the issue when I reached alitude. Like I said hadn't experienced this issue when I was running mineral oil. So I am thinking the mechanic might have done something or something else. One thing I noted we put 8 qts of oil in the engine. On the preflight checked the oil it was at 5.5 qts. No leakage no nothing however I THINK the mechanic might have took some out. When we started up engine the day previous to the flight the oil pressure was high and once stabilized it was at the top range of the green.

Hello fellow Mooney pilots. Have a quick question for you all. On shut down from a flight last night I pulled the mixture to shut down and the engine didn't shut down. I had to pull the throttle all the way to idle and she finally cut off. Interesting given the fact... Just had my 1st oil change the day previous to the flight. Before the oil change and running the mineral oil had no issue. I am think there may be a connection here??? After making a successful landing and heading the the hold short line. I pulled the power to idle and the engine died. Mixture was full rich. Read one post in the forum here. Seen something kinda similar. What was suggested was the mixture setting needed to be adjust. What are you all thoughts?