# "That installation is fraught with peril"

Page: https://stenobird.com/podcast/ask-the-a-ps-1305830/that-installation-is-fraught-with-peril
Text version: https://stenobird.com/podcast/ask-the-a-ps-1305830/that-installation-is-fraught-with-peril.md
Podcast: [Ask the A&Ps](https://stenobird.com/podcast/ask-the-a-ps-1305830)
Published: 2026-04-01T11:53:00+00:00
Episode link: https://traffic.megaphone.fm/AOPA6734367076.mp3?updated=1775450933
Audio file: https://traffic.megaphone.fm/AOPA6734367076.mp3?updated=1775450933
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JSON: https://stenobird.com/v1/public/podcasts/ask-the-a-ps-1305830/episodes/that-installation-is-fraught-with-peril
Duration seconds: 3218

## Resource

How much should a mechanic tell a client during an annual? Mike, Paul, and Colleen handle this question and more. Email podcasts@aopa.org for a chance to get on the show. Join the world's largest aviation community at aopa.org/join Full notes below: Justin flies a Twin Bonanza and cylinder 5 on his left engine takes as much as a minute to fire up and start running. It comes online fastest if he goes very lean quickly after starting. He's pulled the valve cover and springs off, and it's not a sticky valve, and he's reamed the valve guides. Mike wonders if it could be a primer problem. Justin disconnected the primer line, ran the boost pump, and checked for leakage and couldn't find any. Paul suggests taking the line off, capping off the injector, and then trying it. Jorg is trying to make sense of his data. He has a K35 in Austria and he has GAMI injectors and an engine monitor on his IO-470. He has a low CHT on the number 6 cylinder, and it's the first one to go on the lean side, and it shuts down first if they go very lean. An induction leak test seemed fine, and his GAMI spread is less than a gallon an hour. The valve was also lapped. Mike said a low probability culprit could be if the bleed air holes in the injector nozzle were plugged, since they don't seem to have an impact at wide open throttle, but would at a reduced throttle. Mark saw a Youtube video and is now wondering if there's danger lurking in the alternator. The video mentioned how an alternator elastomer coupler failure could lead to a catastrophic engine failure. Paul said the installation is critical because of some critical components. Mike thinks the video relies on old information. He said Continental used to employ a spring, which would come apart and throw large chunks of metal into the engine. T…

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## Transcript

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