Subaru Engine EJ16 1.6L Workshop Manual

Subaru EJ16 1.6L engine repair and maintenance manual. Includes detailed diagrams, design description, maintenance recommendations and diagnostics of possible faults.

Main characteristics of the EJ16:

Type: Opposite, 4-cylinder, 4-stroke

Capacity: 1597 cm³

Power: 90–100 SP (depending on version)

Torque: 128–140 Nm

Injection system: Multi-point injection (MPFI)

Timing: DOHC / SOHC, belt drive

Cooling: Liquid

Cars with EJ16 engine:

Subaru Impreza GC, GF (1992–2000)

Subaru Impreza GD, GG (2000–2007)

Subaru Impreza GE, GH, GR (2007–2011)

• Subaru All Engine>>

Increased oil consumption

Reason: wear of piston rings and valve stem seals.

Solution: replace rings, decarbonize engine, replace valve seals.

Oil leaks

Reason: wear of crankshaft seals, valve cover gaskets.

Solution: replace gaskets and seals, check oil level.

Engine overheating

Reason: thermostat malfunction, coolant leaks, clogged radiator.

Solution: replace thermostat, check and clean cooling system.

Timing belt problems

Reason: belt breakage due to untimely replacement.

Solution: replace belt and rollers every 90,000 km.

Floating speed and unstable operation

Reason: contamination of throttle valve, injectors, sensors (MAF, IACV).

Solution: cleaning injectors, throttle, replacing sensors if necessary.

Increased fuel consumption

Reason: malfunction of oxygen sensors, clogged injectors.

Solution: diagnostics of the injection system, replacement of sensors.

Knocking of hydraulic compensators (if installed)

Reason: contamination of oil channels, low quality of oil.

Solution: use of high-quality oil, flushing the system.

Conclusion

The EJ16 is a fairly reliable engine, but requires timely maintenance, oil changes every 7,000–10,000 km, as well as monitoring the cooling system and timing belt. With proper care, the engine easily runs 300,000+ km without major repairs. 🚗🔧