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.
AcousticsRecognize an engine noise
Identify an internal fault by ear: four sound signatures and what they reveal.
Open module →MetrologyTaking the right measurements (clearances, compression)
The measurements and factory tolerances a pro checks on a removed crankshaft.
Open module →ArchitectureYour engine: 2-stroke or 4-stroke?
Two bottom-end designs, two logics of diagnosis and repair.
Open module →IsolationSensor or mechanical fault?
Tell a genuine mechanical crankshaft failure from a crank speed (CKP) sensor fault.
Open module →