HSCOPE - How to Detect Exhaust Backpressure Using the Crankshaft (CKP) Signal

In this technical video, we analyze the resolution of a complex problem involving power loss and misfires at mid-acceleration in a diesel engine with no diagnostic trouble codes (DTCs) registered on the scanner. Learn to differentiate, using real physical measurements with an oscilloscope, whether the fault originates from a defective injector, a timing correlation mismatch (CKP vs. CMP), or a backpressure restriction in the DPD/DPF particulate filter that physically impedes the crankshaft. Time: 3:44 - Step 1 - Mechanical Correlation Time: 4:37 - Step 2 - Normal Pattern Time: 7:01 - Step 3 - Mathematical Channel Time: 10:00 - Step 4 - Detecting the Anomaly Time: 11:39 - Step 5 - Diagnosing the Physical Restriction Time: 12:59 - Step 6 - Analysis Conclusion Time: 14:20 - Equipment Used for the Test