PAGE 70 — DCA300SSJU4F2 60 HZ GENERATOR • OPERATION MANUAL — REV. #0 (06/26/18)
TROUBLESHOOTING (ENGINE)
Troubleshooting (Engine) - continued
Symptom
Possible Problem
Solution
Low engine power output and low speed,
black exhaust smoke.
Air filter blocked?
Clean or replace air filter.
Incorrect valve clearances?
Adjust valves per engine specification.
Malfunction at injector?
See engine manual.
Engine overheats.
Too much oil in engine crankcase?
Drain off engine oil down to uppermark on
dipstick.
Entire cooling air system contaminated/
blocked?
Clean cooling air system and cooling fin
areas.
Fan belt broken or elongated?
Change belt or adjust belt tension.
Coolant insufficient?
Replenish coolant.
Radiator net or radiator fin clogged with dust? Clean net or fin carefully.
Fan, radiator, or radiator cap defective?
Replace defective part.
Thermostat defective?
Check thermostat and replace if necessary.
Head gasket defective or water leakage?
Replace parts.