FAQ

Common causes:
Fuel system faults: clogged fuel filter (causing insufficient fuel supply), carbon buildup on fuel injectors (poor atomization), fuel line leaks (affecting fuel pressure).
Electrical system faults: insufficient battery voltage (below 12V), starter motor failure, ignition coil aging.
Mechanical faults: insufficient cylinder compression (worn piston rings), timing system disorder (belt breakage or gear slippage).
Typical case: A backup diesel generator at a data center experienced insufficient fuel supply during startup due to a clogged fuel filter. Normal operation was restored after replacing the filter.

Air filter blockage: reduced air intake, decreased combustion efficiency (power drops by 10%-15%).
Common causes:
Turbocharger failure: insufficient boost pressure, resulting in reduced power output.
Fuel quality issues: excessive water content or impurities, affecting combustion efficiency.
Data support: A generator set at a certain factory experienced a 12% power drop due to the use of poor-quality diesel, and returned to normal after replacing the fuel.

Uneven fuel injection: worn or clogged fuel injectors causing uneven combustion in cylinders.
Common causes:
Mechanical component wear: excessive clearance in connecting rod bearings, crankshaft journal wear.
Cooling system failure: water temperature too high (exceeding 95℃) causing uneven thermal expansion.
Case analysis: a hospital generator set experienced severe vibration during operation; inspection revealed worn connecting rod bearings, which were replaced to restore normal function.

Black smoke: incomplete fuel combustion (clogged air filter, poor fuel injector atomization).
Common causes:
Blue smoke: oil burning (piston ring wear, valve oil seal aging).
White smoke: fuel contains water or combustion temperature is too low (commonly seen during initial startup).
Data support: A power generator at a certain factory emitted black smoke. After inspection, the air filter resistance was found to be excessive. After replacement, the black smoke disappeared.

Common causes:
Insufficient coolant: causes water temperature to be too high (exceeding 100℃).
Water pump failure: poor coolant circulation.
Radiator blockage: dust or debris blocking the cooling fins.
Case Study: A data center generator set triggered a water temperature alarm due to a radiator blockage; normal operation was restored after cleaning.