{"podcast":{"title":"Ask the A&Ps","slug":"ask-the-a-ps-1305830","podcast_index_feed_id":1305830,"rss_url":"https://feeds.megaphone.fm/AOPA5756489272","website_url":"https://www.aopa.org/news-and-media/podcasts/podcasts","image_url":"https://megaphone.imgix.net/podcasts/6e2600a8-253c-11ec-b966-2b649faa65d2/image/3f2c3945c28a4e8805acbc7f7e374954.png?ixlib=rails-4.3.1&max-w=3000&max-h=3000&fit=crop&auto=format,compress","author":"AOPA","episode_count":108,"summary":"Experts Mike Busch, Paul New, and Colleen Sterling answer your toughest aviation maintenance questions. Submit questions to podcasts@aopa.org. New episodes are released the first and fifteenth of every month.","last_synced_at":"2026-07-02T04:20:46.276342+00:00","page_url":"https://stenobird.com/podcast/ask-the-a-ps-1305830"},"episode":{"title":"\"If you lose a cylinder in your Cessna 150 you are down on a road somewhere\"","slug":"if-you-lose-a-cylinder-in-your-cessna-150-you-are-down-on-a-road-somewhere","published_at":"2026-05-01T21:04:00+00:00","page_url":"https://stenobird.com/podcast/ask-the-a-ps-1305830/if-you-lose-a-cylinder-in-your-cessna-150-you-are-down-on-a-road-somewhere","show_page_url":"https://stenobird.com/podcast/ask-the-a-ps-1305830","url":"https://traffic.megaphone.fm/AOPA6755724821.mp3?updated=1777670323","audio_url":"https://traffic.megaphone.fm/AOPA6755724821.mp3?updated=1777670323","summary":"Sticky valves, sleepy valves, and valves destined for the trash are on tap this episode. Email podcasts@aopa.org for a chance to get on the show. Join the world's largest aviation community at aopa.org/join Full episode notes below: Mac is trying to get a cylinder to wake up on his Piper Lance. The engine ran rough, and a magneto clearing procedure didn't help. The number 5 cylinder was dropping off according to the engine monitor. It's also next to the turbocharging exhaust. His A&P thought maybe the injector line being next to the pipe might be causing a problem. It only happens after landing, not while flying. Paul thinks it would be a more widespread issue if the plumbing engineering were the issue. The aux fuel pump stops it from happening. Mike suggests a mixture that's too lean could cause this. They suggest checking the idle mixture rise on shutdown. The rpm should rise 25-50 when pulling the mixture at idle. If it doesn't rise as much it's too lean, and if it rises too much it's too rich. They also suggest running a GAMI lean test to determine if the cylinder is a lean outlier. Conor has a Cessna 150. On the way back from Oshkosh last year he experienced a stuck valve. There was discoloration from being hot when the cylinder was pulled. He leans aggressively. He's wondering if he's leaning too aggressively and is getting the engine too hot. He leans to roughness and enrichens only until it gets smooth. The hosts think the engine has to be in detonation for it to get too hot. The piston tops are fine under borescope, so the hosts think it's fine. Andrew wants to knock the rust off his A&P certificate. The hosts suggest the new Savvy Aviation IA recurrent course. It's a free 8-hour course to help refresh his memory. Beyond that, Paul suggests a 172 cours…","meta_description":"Sticky valves, sleepy valves, and valves destined for the trash are on tap this episode. Email podcasts@aopa.org for a chance to get on the show. Join the…","key_points":[],"chapters":[],"topics":[],"duration_seconds":3033,"processing_state":"not_requested","actions":[{"name":"request_transcript","method":"POST","url":"https://stenobird.com/v1/public/podcasts/ask-the-a-ps-1305830/episodes/if-you-lose-a-cylinder-in-your-cessna-150-you-are-down-on-a-road-somewhere/transcription-requests","description":"Idempotently request low-priority transcript generation for this episode."},{"name":"read_markdown","method":"GET","url":"https://stenobird.com/podcast/ask-the-a-ps-1305830/if-you-lose-a-cylinder-in-your-cessna-150-you-are-down-on-a-road-somewhere.md","description":"Read the agent-friendly Markdown representation of this episode resource."}]}}