Narrative:

Began second leg of flight back to ZZZ. Followed checklist for departure and did a quick runup as it was a quick turn. Engine seemed to be stable while checks were completed and engine was warmed up from prior flight. Departed with no issues or messages on display. Passing 7;000 ft.; notice cht temps were rising but were stable until reaching 11;000 ft. When reaching 11;000 ft. Cht temps on cylinder 1;4;& 6 rose to 485F which max temp is 500F and message was displayed. Egt temp for cylinder 1 & 6 went offline and the chugging of the engine began; performance went from 92% to 64%. I tried throttling back and pulling mixture back a little to cool the engine and to stabilize but also noted the mountains just ahead also. Advised ATC. Notice a large [airport] on left side and began a sharp turn toward [the runway] while also descending. Engine still chugged on the way down but began to come back to life while forcing air into the inlets to cool engine down. Power returned 2 miles from threshold of [the runway]. I did panic for a second when the incident happen but regained myself and flew the plane with quick thinking by avoiding in trying to glide across mountains. Caps was unneeded for use as altitude was enough and airspeed was enough to land at [the nearby airport]. Aircraft was found to have loose mechanical parts in engine compartment; fuel lines not secured with new O rings; r mag failed; and quarter sized hole behind the left turbo manifold area that sent out 1300F possible flame that melted some wires and also heat exchanger. Aircraft is grounded and is being repaired.

Related reports:

Google
 

Original NASA ASRS Text

Title: SR-22 pilot reported diverting to a nearby airport when he experienced a power loss and high cylinder head temperatures.

Narrative: Began second leg of flight back to ZZZ. Followed checklist for departure and did a quick runup as it was a quick turn. Engine seemed to be stable while checks were completed and engine was warmed up from prior flight. Departed with no issues or messages on display. Passing 7;000 ft.; notice CHT temps were rising but were stable until reaching 11;000 ft. When reaching 11;000 ft. CHT temps on cylinder 1;4;& 6 rose to 485F which max temp is 500F and message was displayed. EGT temp for cylinder 1 & 6 went offline and the chugging of the engine began; performance went from 92% to 64%. I tried throttling back and pulling mixture back a little to cool the engine and to stabilize but also noted the mountains just ahead also. Advised ATC. Notice a large [airport] on left side and began a sharp turn toward [the runway] while also descending. Engine still chugged on the way down but began to come back to life while forcing air into the inlets to cool engine down. Power returned 2 miles from threshold of [the runway]. I did panic for a second when the incident happen but regained myself and flew the plane with quick thinking by avoiding in trying to glide across mountains. CAPS was unneeded for use as altitude was enough and airspeed was enough to land at [the nearby airport]. Aircraft was found to have loose mechanical parts in engine compartment; fuel lines not secured with new O rings; r mag failed; and quarter sized hole behind the left turbo manifold area that sent out 1300F possible flame that melted some wires and also heat exchanger. Aircraft is grounded and is being repaired.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.