Study guide
ASE A1 study guide
Read a lesson, then practice the ideas you want to remember.
Lessons
- Exhaust System & Backpressure Diagnostics
- Engine Fluid Leak & Contamination Analysis
- Mechanical Noise & Internal Clearance Diagno
- OBD-II Diagnostic Trouble Codes & Scan Tool
- Cylinder Head Removal, Disassembly, & Inspec
- Pushrods, Rocker Arms, & Overhead Camshaft I
- Valve Lash Adjustment & Hydraulic Lash Adjus
- Valve Train Component Inspection & Service
- Balance Shafts, Flywheel, & Engine Assembly
- Engine Block Inspection, Cleaning, & Machini
- Crankshaft & Main/Rod Bearing Service — Free Study Guide 2026
- Piston, Piston Pin, & Piston Ring Fitting
- Compression & Cylinder Leak-Down Testing
- Cranking & No-Start Diagnostic Procedures
- Engine Performance & Misfire Troubleshooting
- Vacuum Gauge Testing & Dynamic Pressure Anal
- Engine Diagnostic Strategy & Tool Usage
- ASE A1 Exam Structure & Certification Requir
- Engine Noise, Vibration, & Smoke Analysis
- Cooling System Inspection, Pressure Testing,
- Oil Pressure Testing & Low/High Pressure Dia
- Oil Pump Inspection, Overhaul, & Relief Valv
- Thermostat, Water Pump, & Fan Control Diagno
- Exhaust System Diagnosis & Service — Free Study Guide 2026
- Fuel Delivery, Pressure Testing, & Injector
- Ignition System Testing & Spark Component Di
- Air Induction System, Throttle Body, & PCV I
- Camshaft & Lifter/Follower Service Procedure
- Timing Belt & Timing Chain Inspection & Repl
- Variable Valve Timing Systems & Phaser Diagn