https://stream.echo6.co/videos/watch/9b4d27b0-81a8-4dc5-a5e3-eba5c5e18801 This class is a great lesson in in-cylinder pressure analysis and why pressure transducer testing can take you to the right answer when other tests point you in the wrong direction. In this case, the vehicle felt like it had a plugged exhaust. Even the symptoms and some of the early test results pushed us that way. But the in-cylinder pressure waveform told a different story. By looking at exhaust-stroke pressure, intake vacuum, running compression, and valve event timing, we were able to prove this was not a restricted exhaust and move toward the real problem. Watch Part 1 here: https://youtu.be/8q1OaCYe8bY This is also a strong reminder that cam/crank correlation alone does not always tell the full story. The known-good comparison looked acceptable, yet the in-cylinder waveform showed clear evidence of a timing-related issue. If you want to get better at reading pressure transducer waveforms, measuring valve events, and using running compression as a diagnostic tool, this class is packed with value. 00:00 In-cylinder pressure proves it’s not a restricted exhaust 04:09 Running vs. cranking compression reveals a major breathing problem 07:52 Exhaust valve opening and intake valve closing both point to late cam timing 13:11 Spark timing checks show the whole event is shifted 18:47 Cam/crank correlation still looks normal because of a shifted crank keyway theory 23:26 Recall research and crank gear design support the damaged-keyway conclusion 29:43 Hard brake pedal was caused by low engine vacuum, not a bad brake booster 32:52 Final teardown begins to confirm the diagnosis 🔧 Looking for deeper training? Join ScannerDanner Premium for full courses, case studies, and foundational diagnostics training: https://www.scannerdanner.com/join-scannerdanner-premium.html On ScannerDanner Premium, you’ll get: • In-depth classroom lectures straight from my book • Real case studies with known-good and failed test results • Training focused on process, not guesswork • Electrical, electronics, and drivability diagnostics • Access to hundreds of hours of premium content 📘 Want to learn more about diagnostics? Check out my book, Engine Performance Diagnostics, plus tool links here: https://linktr.ee/scannerdanner ⚠️ Disclaimer: ScannerDanner LLC is not responsible for misuse, unauthorized changes, or incorrect application of any information provided in this video. Always follow proper safety procedures and manufacturer information when performing vehicle testing and repairs. Use this content at your own risk. #ScannerDanner #InCylinderPressure #PressureTransducer #RunningCompression #EngineTiming #AutomotiveDiagnostics #OscilloscopeDiagnostics #DrivabilityDiagnosis Wed, 15 Apr 2026 09:52:51 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://stream.echo6.co https://stream.echo6.co/client/assets/images/icons/icon-512x512.png https://stream.echo6.co/videos/watch/9b4d27b0-81a8-4dc5-a5e3-eba5c5e18801 All rights reserved, unless otherwise specified in the terms specified at https://stream.echo6.co/about and potential licenses granted by each content's rightholder.