AV-SCANNER guides
Every guide behind the AV-SCANNER's Service Function, IMMO and Accessories apps, in one place. Read them online or download each one as a PDF for the workshop.
Test live connectors without damaging them
Check the diagnostic port and its pins
Find bearing, valve and injector noises
Spot misfires, drains and overheating parts
Measure current without breaking the circuit
See pressure as a waveform on a scope
Test vacuum actuators and bleed systems
Read cranking compression without removing plugs
Choose a phone endoscope and use it well
Test coils quickly on the vehicle
Run dry and wet compression tests
Find exactly where a cylinder loses pressure
Test petrol fuel pressure safely
Read engine health from manifold vacuum
Check ignition timing on older engines
Confirm ignition spark safely
Choose, use and look after a torque wrench
Measure real engine oil pressure
Pressure test a turbocharged intake
Remove oil and fluids from above
Why engines need timing tools and how to use them
Compare injector return flow
Choose the right wrench for tight filters
Remove, gap and refit plugs properly
Look up a fault code, run a local diagnosis and open the right guide from the reader's own menus.
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