2026-10-08 · 5 min read
Mitsubishi Galant Fortis Fuel Injector Malaysia
The 4B11 uses port fuel injectors, which are more resistant to coking than direct injection injectors. However, on high-mileage units using lower-quality fuels, injector deposits can build up and affect spray pattern. Symptoms include rough idle, slight hesitation, and a drop in fuel economy. Ultrasonic injector cleaning is a cost-effective service before committing to replacement. If one injector is significantly more clogged than others, individual replacement is an option.
Galant Fortis Fuel Injector Service
- Port-injected 4B11: injector cleaning every 60,000 km sufficient — less vulnerable to deposits than direct injection
- High-mileage Galant Fortis: fuel system cleaner additive every 30,000 km prevents injector clogging
- Symptoms of dirty injectors on 4B11: rough idle at warm-up, hesitation during MIVEC transition at 4,000 rpm