4B12 engine
The 4B12 engine is fitted to 3 generation(s): Mitsubishi Outlander, Mitsubishi Delica.
Common problems and what to check
Engine: Mitsubishi 4B1x (1.8–2.4)
- few widespread serious problems
- valve cover leak
- chain stretch at high mileage
What to check when buying: oil traces; CVT (usually weaker than the engine).
Tip: Oil per schedule.