Uploaded March 2026 | Updated September 2026, 3 weeks ago
This is the final part of this low power case study, and it ties everything together.
The teardown confirms the shifted crank keyway, explains why the cam/crank relationship still looked perfect, and shows why the in-cylinder pressure transducer was the test that exposed the real problem. This is a strong class on pressure waveform analysis, valve event testing, running compression, and using mechanical scope work to find what conventional cam/crank checks can miss.
If you’ve ever wondered how an engine can have late cam timing with a known-good cam/crank pattern, this is the answer.
Watch Part 1 here:
youtu.be/8q1OaCYe8bY
Watch Part 2 here:
youtu.be/pdSV03a3WpQ
Looking for deeper diagnostics training?
Join ScannerDanner Premium for full courses, case studies, and foundational diagnostics training:
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
Book, tool links, and more:
https://linktr.ee/scannerdanner
00:00 Final teardown confirms the shifted crank keyway
02:32 Why cam/crank correlation stayed perfect even though cam timing was off
05:04 Measuring crank gear shift in degrees from the damaged keyway
08:22 New gear installed reveals crankshaft wear and side-to-side play
11:03 Vacuum gauge before-and-after proves the engine is breathing normally again
14:28 Wide-open-throttle before-and-after road test confirms the low-power fix
16:05 Volumetric efficiency before-and-after comparison shows major improvement
18:23 In-cylinder pressure waveform comparison: vacuum, running compression, and breathing improvement
22:25 Exhaust valve opening before-and-after confirms late valve timing was corrected
27:16 Intake valve closing before-and-after shows both cams were late by the same amount
35:45 Ignition timing before-and-after explains the severe low-power symptoms
40:36 Final takeaways on using pressure transducers to find timing problems cam/crank patterns can miss
#ScannerDanner #InCylinderPressure #PressureTransducer #EngineTiming #CamCrankCorrelation #RunningCompression #AutomotiveDiagnostics #OscilloscopeDiagnostics
⚠️ 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.
This is the final part of this low power case study, and it ties everything together.
The teardown confirms the shifted crank keyway, explains why the cam/crank relationship still looked perfect, and shows why the in-cylinder pressure transducer was the test that exposed the real problem. This is a strong class on pressure waveform analysis, valve event testing, running compression, and using mechanical scope work to find what conventional cam/crank checks can miss.
If you’ve ever wondered how an engine can have late cam timing with a known-good cam/crank pattern, this is the answer.
Watch Part 1 here:
youtu.be/8q1OaCYe8bY
Watch Part 2 here:
youtu.be/pdSV03a3WpQ
Looking for deeper diagnostics training?
Join ScannerDanner Premium for full courses, case studies, and foundational diagnostics training:
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
Book, tool links, and more:
https://linktr.ee/scannerdanner
00:00 Final teardown confirms the shifted crank keyway
02:32 Why cam/crank correlation stayed perfect even though cam timing was off
05:04 Measuring crank gear shift in degrees from the damaged keyway
08:22 New gear installed reveals crankshaft wear and side-to-side play
11:03 Vacuum gauge before-and-after proves the engine is breathing normally again
14:28 Wide-open-throttle before-and-after road test confirms the low-power fix
16:05 Volumetric efficiency before-and-after comparison shows major improvement
18:23 In-cylinder pressure waveform comparison: vacuum, running compression, and breathing improvement
22:25 Exhaust valve opening before-and-after confirms late valve timing was corrected
27:16 Intake valve closing before-and-after shows both cams were late by the same amount
35:45 Ignition timing before-and-after explains the severe low-power symptoms
40:36 Final takeaways on using pressure transducers to find timing problems cam/crank patterns can miss
#ScannerDanner #InCylinderPressure #PressureTransducer #EngineTiming #CamCrankCorrelation #RunningCompression #AutomotiveDiagnostics #OscilloscopeDiagnostics
⚠️ 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.
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