I could use some input here. Sunday on take off roll full power and full rich, I got about 100 ft off runway in steep climb when the engine went real rough and low power. An observer said he saw some white smoke briefly. I had lowered nose and reduced throttle and mix back some. Pump was on. Tanks were near empty with about 4 gal a side. I have 0-360 lycoming new from Van's with 140 hours tach with trouble free flights. In fact I flew 400 miles Sat with no issues. Temp outside mid 80s. Then yesterday after looking for any issues under cowl I fuels up with 109ll and tried again. Same thing! The engine runs fine if I lean back 1/4 or more on take off but never had to before from my 1000 ft msl runway.
Carb hasn't been tinkered with either but I did remove left mag to have internal timing checked by mag shop. After reinstall, the engine starts much easier and was running quite well for last 6 or 7 flights. I have been adjusting the idle mixture but nothing else with carb. Rechecked mag external timing and mag sync and looks fine. Not sure what has happened. Like I said, the two flights the day prior were just fine on take off and cruise.
What would cause white smoke? Water? Feels rich though.
Any input appreciated. I'm guessing I'll need to remove carb and have inspected. It's only got 140 hours on it though.
Thanks!
Carb hasn't been tinkered with either but I did remove left mag to have internal timing checked by mag shop. After reinstall, the engine starts much easier and was running quite well for last 6 or 7 flights. I have been adjusting the idle mixture but nothing else with carb. Rechecked mag external timing and mag sync and looks fine. Not sure what has happened. Like I said, the two flights the day prior were just fine on take off and cruise.
What would cause white smoke? Water? Feels rich though.
Any input appreciated. I'm guessing I'll need to remove carb and have inspected. It's only got 140 hours on it though.
Thanks!