Wacker Neuson
Overfueling / Incomplete Combustion (Diesel)
Excessive black smoke from exhaust during operation
Advertisements
Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
Advertisements
Possible Causes
Clogged air filter, Sticking injector, Incorrect injection timing, Overloaded generator
How to Fix / Troubleshooting
Safety first: Operate in a well-ventilated area. Avoid inhaling exhaust fumes.
- Check air filter: Remove and inspect the air filter. Replace if dirty or oil-soaked.
- Reduce load: Temporarily disconnect non-essential loads and observe if smoke decreases. Persistent smoke at low load indicates engine issues.
- Fuel quality: Drain and replace old or contaminated diesel. Replace the fuel filter.
- Injector service: If smoke continues, have injectors tested and serviced by a diesel specialist. Incorrect spray pattern can cause black smoke.
- Timing check: Injection pump timing should be verified and adjusted by a qualified technician.
Advertisements
Repair Difficulty
Hard
4/5
Required Part
Fuel Injector Set
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements