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TOPIC: Manifold Fluctuation

Manifold Fluctuation 6 days 22 hours ago #671

I've recently purchased a 2008 T206H and have been having issues with manifold fluctuations at altitude. In the last flight (today) it started fluctuating at 16,500. I'd keep the throttle, mixture and prop as reasonably stable once at 17,500. I've also experienced issues at lower altitudes (14,500) on other flights.

I did use some Mouse Milk on the wastegate shaft the best I could do it without disassembling anything and moving the wastegate with an adjustable crescent wrench. At this point I was going to bring it into the shop, but I'd like to consider opinions on the culprits. 1. Wastegate, 2. Pressure Regulator, 3. Fuel Pump (I forgot to turn on the electric fuel pump to see if that helps). The engine does have 1700 hours, so it's not unlikely something is worn out.

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