Troubleshooting; Engine - Hitachi ZAXIS 70 Operator's Manual

Problem
Engine Cranks But Will
Not Start or Hard to Start
Engine Knocks, Runs Ir-
regularly or Stops

TROUBLESHOOTING

ENGINE

Cause
No fuel
Wrong fuel
Contaminated fuel
Low battery power
Injection pump
Wrong preheat line or glow plugs
Poor electrical connection
Starter motor failure
Wrong engine oil
Air filter plugged
Fuel filter plugged
Engine compression low
Injection nozzles dirty or not working
correctly
Fuel shut-off linkage
Leaks in fuel system
Air in fuel system
Fuel feed pump plunger up
Feed pump strainer dirty
Engine oil level low
Plugged air intake system
Feed pump strainer dirty
Injection pump out of time
Plugged fuel filters
Low coolant temperature
Water, dirt or air in fuel system
Injection nozzles dirty or faulty
Fuel shut-off linkage
Add fuel.
Bleed air.
Drain tank. Use correct fuel.
Drain tank and add clean fuel.
Charge or install new battery.
See your authorized dealer.
See your authorized dealer.
Clean and tighten battery and starter
motor connections.
Replace starter.
Drain oil. Use correct oil.
Replace elements.
Remove air from fuel system.
Clean fuel tank strainer.
See your authorized dealer.
See your authorized dealer.
Adjust or repair linkage.
Check fuel system connections.
Bleed air.
Push down and tighten knob.
Clean or replace.
Add oil.
Clean filter and system.
Clean or replace.
See your authorized dealer.
Install new filters.
Thermostat not working correctly or too
"cool".
Bleed air from fuel system.
Clean fuel tank outlet screen.
See your authorized dealer.
Adjust or repair linkage.
11-1
Solution