Piston ringland failure in the EJ257 engine
Severity 3/3 · SeriousThe EJ257 2.5 turbo is known for the rupture of the piston ringland (the land between the rings), mainly triggered by knocking (detonation), a lean mixture, poor-octane fuel or aggressive tuning. Symptoms cited: loss of power, blue or grey smoke, irregular idling, metal particles in the oil, metallic noises. Buying guides recommend avoiding cars that have been remapped.
- Versions
- STI, STI S
- Onset
- not documented
- Repair
- not documented