Toyota 4A-FE, 4A-GE Engine Repair Manual
This repair and maintenance manual for Toyota 4A-FE and 4A-GE engines is designed for mechanics, car enthusiasts, and owners of vehicles equipped with these powertrains.
The manual provides detailed coverage of:
- engine specifications;
- step-by-step disassembly and assembly instructions;
- fuel, ignition, and cooling system diagrams;
- diagnostic and troubleshooting recommendations;
- threaded tightening specifications and adjustment data;
- fuel system, timing belt, and attachment maintenance.
Both engines – 4A-FE (16-valve, economical) and 4A-GE (sporty, with high power per liter) – became iconic for Toyota Corolla, Sprinter, Celica, Levin/Trueno and other models of the 80s and 90s.
This manual is a valuable resource for anyone looking to maintain their engine, perform DIY repairs, or better understand one of Toyota's most famous engines.
| 4A-FE, 4A-GE Introduction | Download |
| 4A-FE, 4A-GE Engine Mechanical | Download |
| 4A-FE, 4A-GE EFI system | Download |
| 4A-FE, 4A-GE Cooling system | Download |
| 4A-FE, 4A-GE Lubrication system | Download |
| 4A-FE, 4A-GE Ignition system | Download |
| 4A-FE, 4A-GE Starting system | Download |
| 4A-FE, 4A-GE Charging system | Download |
| 4A-FE, 4A-GE Service specifications | Download |
| 4A-FE, 4A-GE Standard bolt torque specifications | Download |
| 4A-FE, 4A-GE SST and SSM | Download |
4A-FE, 4A-GE Typical problems
🔧 Toyota 4A-FE – Common Problems
Worn valve stem seals
– Increased oil consumption, smoke when cold.
Dirty throttle body and injectors
– Unstable idle, hesitation.
Worn timing belt and rollers
– A broken valve usually doesn't bend, but it does make the engine noisy.
Air leaks (intake manifold, vacuum hoses)
– Incorrect fuel mixture, fluctuating RPM.
Knocking from hydraulic lifters (if equipped) or loose valve clearances
– Increased noise when cold.
⚙️ Toyota 4A-GE – Common Problems
High oil consumption
– Especially on high-mileage models (worn cylinder-piston group and valve stem seals).
Sensitivity to overheating
– Cylinder head warping may occur due to poor cooling.
Worn camshafts
– Especially on "blackhead" engines, with infrequent oil changes.
High idle speed
– Usually due to a faulty IACV (idle air control valve).
Oil leaks from seals and gaskets
– Typical for older engines.