Advanced diagnostics
Reference modules to go beyond the symptom: recognise a sound signature, understand what a professional measures and to what tolerances, tell engine architectures apart, and work out whether a fault is electronic or mechanical. These guides explain and point the way — they don't replace inspection by a certified mechanic.
AcousticsEngine acoustics guide
Identify an internal fault by ear: four sound signatures and what they reveal.
Open module →MetrologyEngine metrology guide
The measurements and factory tolerances a pro checks on a removed crankshaft.
Open module →ArchitectureCrankshaft architecture: 2-stroke vs 4-stroke
Two bottom-end designs, two logics of diagnosis and repair.
Open module →IsolationSensor or mechanical? Isolation tool
Tell a genuine mechanical crankshaft failure from a crank speed (CKP) sensor fault.
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