Failure to Rotate - Burned Valves - Savvy Aviation Watch in HD on YouTube! Share on Facebook! Savvy Aviation's Mike Busch discusses the function of exhaust valve rotator caps and their importance to keep unwanted deposits from sticking to the valve seat. Mike will review the causes of burned exhaust valves, and discuss ways to prevent this from happening. Savvy Aviation offers Professional Maintenance Services to owners of General Aviation aircraft, such as: SavvyMx (Professional Maintenance Management), SavvyQA (Expert Consulting), SavvyPrebuy, SavvyAnalysis (Engine Data Analysis) and Breakdown Assistance. Savvy also publishes a monthly newsletter with lots of interesting information for the general aviation enthusiast; subscribe to it at https://www.savvyaviation.com or text the word "Savvy" to 33777. This webinar was hosted by the Experimental Aircraft Association (EAA).