AV-SCANNER guides
Service function guides
Resets, relearns, calibrations and repairs, step by step. Each guide is free to read here and to download as a branded PDF for the workshop.
Compression and Leak-Down Testing
Prove the mechanical health of each cylinder
Spark Plug and Coil Service
Replace ignition parts and confirm the misfire has gone
Mass Air Flow Sensor Service
Clean, test and confirm a MAF sensor with live data
Timing Belt Replacement Planning
Know when a belt is due and what to replace with it
Valve Clearance Check
Measure and correct valve clearances
PCV System Service
Test crankcase ventilation and cure oil consumption
Oil Pressure Testing
Measure real oil pressure and trace warning lights
Oil Leak Tracing
Find the true source of an engine oil leak
Turbocharger Inspection
Check shaft play, boost leaks and oil supply
Boost Leak Test
Pressure test the intake and find boost leaks
Knock Sensor Diagnosis
Test knock sensors and read knock retard data
Engine Misfire Diagnosis
Find a misfire by cylinder using scan data and swaps
Rough Idle Diagnosis
Work through the causes of an unstable idle
Engine Mount Inspection
Diagnose vibration and worn mounts
Serpentine Belt Service
Inspect and replace the belt, tensioner and idlers
Engine Oil Selection Guide
Read viscosity and specifications and pick the right oil
Excessive Oil Consumption Diagnosis
Find where the oil is going
Blue, White and Black Exhaust Smoke
Read exhaust smoke and trace the cause
Engine Noise Diagnosis
Tell lifter tick, rod knock and piston slap apart
Engine Stalling Diagnosis
Find why an engine cuts out when hot, cold or stopping
Hard Starting Diagnosis
Work through long cranking and no-start faults
Loss of Power Diagnosis
Find why a car feels slow
Engine Flush and Sludge Prevention
Prevent sludge and judge when flushing is safe
Cylinder Head Inspection
Check a head for cracks, warping and valve wear
Use them with the AV-SCANNER
Look up a fault code, run a local diagnosis and open the right guide from the reader's own menus.
