WEICHAI WD10 Service Manual - page 34
Service Manual for WD10 Diesel Engine
24
12. Incorrect valve or injection timing
Check and adjust it.
13. Governor
high-speed
regulating
performance is poor
Check the speed control characteristic and adjust.
14. High engine oil level in oil sump
Check oil dipstick and drain redundant engine oil
out.
15. Air leakage in cylinder gasket
Check the compression pressure when engine is
running, replace damaged gasket.
16. Scuffing of piston ring, oversized bearing
shell clearance
Replace the damaged parts or overhaul the engine.
17. Wear of piston or cylinder sleeve, or
scuffing of cylinder bore
324 Large Fuel Consumption
1. Blockage of intake pipe
Check air filter and intake pipe, clean them up.
2. High exhaust back pressure
Check whether the exhaust pipe and brake valve are
blocked, clean them up if so.
3. Inferior fuel
Replace the fuel according related requirements.
4. Blockage of fuel pipe
Check and repair.
5. Oil leakage in fuel pipe
Check and repair.
6. Bad atomization
Check and adjust or repair.
7. Incorrect valve or injection timing
Adjust valve clearance and fuel supply advance
angle according related requirements.
8. Air leakage in cylinder gasket
Check the compression pressure.
9. Oversized shell clearance and the engine
needs to be overhauled
Check and overhaul the engine.
10. Cylinder swelling due to piston problem Replace cylinder sleeve, piston and piston ring.
11. Underpressure of supercharging system
Check and eliminate leakage in pipes and joints.
12. Malfunctioned turbocharger
Check and replace.
13. Intercooler is damaged or leaking air
Replace or repair.