Yancheng Tractor Factory Jinma 200 Series, Руководство пользователя

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Jinma 200 series Tractor Users Manual
MCE 2004.01
Troubleshooting guide for Diesel Engines
Version 0.2 Page 32 of 52
The following is a general diesel engine diagnostic guide. It may not be 100% effective for Jinma series of diesel engines.
Symptom Cause Remedy
Black or Dark Gray Smoke
Injector pump timing retarded Set timing
Injector pump timing advanced Set timing
Weak cylinder compression Repair engine
Smokes under load, especially at high speed. Restricted air cleaner Clean/replace air filter element
Dirty injector nozzle(s) Clean/replace injector(s)
Clogged/restricted fuel lines Clean/replace fuel lines
Sticking injectors Clean/replace injector(s)
Blue, blue­ gray, or gray­white smoke
Injector pump timing retarded Set timing
Leaking injector(s) Repair/replace injector(s)
Leaking valve seals. Replace seals. Check valve guide/stems.
Worn rings/cylinders. Overhaul/rebuild engine.
Over­cooling Replace thermostat
Engine cranks slowly but does not start.
Cranking system malfunction Check battery, cable terminators, and starter motor
Crankshaft bound, viscosity
Faulty injectors Check injector opening pressure.
Cranking speed erratic, engine does not start. Valves out of time Check valve timing
Engine cranks normally, but does not start.
Glow plus inoperable Check glow plugs, control circuitry
Incorrect or contaminated fuel Check fuel supply
No fuel to cylinders
Incorrect pump timing Check timing
Air intake restriction Check filter element
Exhaust system restriction Check system
Low compression Test cylinder compression
Smokes under load, especially at high and medium
speed. Eng ine is quitter than normal.
Smokes under load, especially at low and medium
speed. E ngine is noisier than normal.
Smokes under load at all speeds, but most apparent at
low and medium speeds. Engine may be difficult to
start.
Smokes under load, especially at high and medium
speed. Power may be down.
Smokes under load, especially at low and medium
speed. Power may be down.
Puffs of black smoke, sometimes with blue or white
component. E ngine may knock.
Whitish or blue smoke at high speed and light load,
especially when engine is cold. A s temperature rises
smoke color changes to black. Po wer loss across the
full RPM band, especially at full throttle.
Whitish or blue smoke under light load, after engine
reaches operating temperature. K nocking may be
present.
Blue smoke on acceleration after a prolonged period
at idle. S moke may disappear under steady throttle.
Persistent blue smoke at all speeds and loads, and
operating temperatures.
Light blue or whitish smoke at high speed under light
load. P ungent odor.
Bar engine over by hand. If it appears tight, check
oil for ethylene glycol leaks into sump.
Trace the supply forward from tank to transfer
pump, transfer pump to high pressure pump
(which may be the same unit), high pressure pump
to injectors, injectors to nozzles.