Maeda MC815C - Much Black Smoke in Exhaust Gas; Much White Smoke in Exhaust Gas

T-407
S-5 [Much white smoke in exhaust gas]
Symptom Much white smoke in exhaust gas
Assumed cause
and action to be
taken
Cause Diagnostic method and action to be taken
1 Fuel or oil abnormality • Check to ensure that specified fuel and oil are used.
2 Fuel piping fault
• Check fuel line for any air inclusion.
• Check fuel piping for any damage.
3 Intake system fault
• Check air cleaner for any clogging.
• Check air intake piping for any fault.
4 Fault in exhaust system
• Check the exhaust system including muffler and exhaust pipe
for any abnormality.
5 Electrical wiring fault
• Check engine and fuel circuit for any faulty connection in the
injector connector.
6 Injector fault
• Check to ensure that the injector of injection unit is functioning
properly.
[Additional information]
Note on the use of unauthorized fuels:
• Use of a low viscosity fuel such as kerosene may cause an injection fault due to an abnormal abrasion of
injector seat, resulting in generation of white smoke.
• In the case of the above-mentioned fault, replacement of injector is required. Give guidance to the user that
the specified fuel should be used after replacement.
S-6 [Much black smoke in exhaust gas]
Symptom Much black smoke in exhaust gas
Assumed cause
and action to be
taken
Cause Diagnostic method and action to be taken
1 Fuel or oil abnormality • Check to ensure that specified fuel and oil are used.
2 Fuel piping fault
• Check fuel line for any air inclusion.
• Check fuel piping for any damage.
3 Intake system fault
• Check air cleaner for any clogging.
• Check air intake piping for any fault.
4 Fault in exhaust system
• Check the exhaust system including muffler and exhaust pipe
for any abnormality.
5 Electrical wiring fault • Check engine and fuel circuit.