Trouble shooting table
10
Fault Probable cause
Remedy
(This column is filled in only if the
”probable cause” gives no clue as
to what must be done).
Starter does not crank
the engine or only too
slowly
D Battery main switch in ”off” position
D Batteries flat
D Crankgear blocks
D Battery cable connections loose or cor-
roded
D Starter electromagnetic switch sticking
(clicks)
D Cable connection from ignition lock to
starter electromagnetic switch is loose
or interrupted
D Starter electromagnetic switch faulty
D Starter defective (carbon brushes loose,
winding faulty, short-circuit to earth)
D Engine oil viscosity not suitable
D Starter interlock relay defective
D Knock on the magnet
D Check with check lamp
D See ”Fuels, Lubricants ...”
D Checking: Connect terminals
50e and 50f
Engine does not start D Fuel tank empty
D Fuel valve shut
D Cut-off solenoid in “STOP” position
D Air in fuel system
D Fuel lines leaky, ruptured, clogged
D Fuel filter / prefilter clogged
D Suction height of fuel delivery pump
(max. 1m) exceeded
D Fuel delivery pump faulty
D Air supply/exhaust gas pipes clogged
D Unsuitable fuel
D Delivery start incorrect
D Valve clearance incorrect
D Injection nozzles worn
D Compression insufficient
Engine does not start
while cold
D Fuel filter clogged with paraffin
D Engine oil viscosity unsuitable
see: ”Engine does not start”
D See ”Fuels, Lubricants ...”
Engine does not run
smoothly, and stops
D Lower idle speed set too low
D Air in fuel system
D Fuel lines leaky, ruptured, clogged
D Fuel filter clogged
D Inlet chamber pressure of injection
pump too low
D Fuel high-pressure part leaky
D Injector needle sticking
D Delivery start set incorrectly
D Injection pump set incorrectly or
defective
D Valve clearance incorrect
D Compression insufficient
D Remedy by Bosch Service
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