Trouble shooting table 11 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 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