58
Fault Finding
CHART A4—Engine starts then stops
Cause
Remedy
No fuel supply in tank. Check the level in the fuel tank and replenish as required.
Engine starting under load. Check for added loading form malfunctioning accessories or
driven units, brakes dragging and other changes in the vehicle
loading. Disengage the hydraulic controls.
Idle speed too low for accessories. Adjust the idle speed. Refer to the machines service manual for
correct adjustment procedures and idling speed.
Air intake or exhaust system is blocked. Visually check the air intake and exhaust intake for blockage or
obstruction-remove as required. Check the air filter elements for
signs of blocking, replace as required.
Fuel is aerated. Check the fuel system for loose connections and possible air
ingress points. Rectify and bleed the fuel system.
Fuel lift pump not operating correctly (fuel
supply inadequate).
Check that the lift pump is operating and delivering fuel to the
injection pump.
Fuel is waxing due to extremely cold
weather.
Verify by inspecting the fuel filter. Clean the filter and use
acclimatised fuel.
Fuel is contaminated or incorrect grade of
diesel used.
Refer to Fluids & Lubricants section for recommended diesel
fuels. If the fuel is suspect, verify by operating the engine with
clean fuel from a temporary tank.
Fuel filter(s) blocked, fuel supply restricted. Check/replace the fuel filter(s). Check fuel lines for restriction.
Moving parts are overheated due to shortage
of lubrication oil or improper lubrication
•
Check engine oil level
•
Check lubricating oil system
•
Check bearing clearances is with factory specs (Kubota
specialist)
Bad Nozzle If necessary replace with a new nozzle
Fuel drain return line blocked or not
connected properly.
Verify that the fuel return line is not obstructed and connected to
the top of the fuel tank.
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