9.5 Engine faults
Fault
Possible cause
Remedy
No or poor starting
of engine
Fuel tank empty
Check the fuel level, top up if necessary
Fuel filter clogged
Check the fuel filter, replace if necessary
Fuel lines leaking
Check the fuel lines
Incorrect valve clearance
Check, adjust the valve clearance
Wear on cylinder or piston rings
Have checked by qualified expert per-
sonnel
Injection nozzle out of order
Have checked by qualified expert per-
sonnel
Engine does not
start or starts poorly
at low temperatures
Fuel filter clogged by paraffin separation
Change the fuel filter, use winter fuel
Engine oil with wrong SAE viscosity class Change the engine oil
Engine does not
crank when oper-
ating the recoil
starter
Recoil starter defective
Replace the recoil starter
Spring broken
Replace the recoil starter
Starter rope of
recoil starter does
not return to initial
position
Recoil starter dirty
Clean the recoil starter
Insufficient pre-tension of the spring
Check the pre-tension of the spring,
adjust if necessary
Spring broken
Replace the recoil starter
Engine ignites, but
does not run
Fuel filter clogged
Check the fuel filter, replace if necessary
The starter does
not switch on or the
engine does not
crank.
Fault in the electric system:
n
Battery or other cable connections
not correctly connected.
n
Cable terminals loose or oxidised.
n
Battery defective or not charged.
n
Starter defective.
n
Fuse defective.
Check
Engine stops
Fuel tank empty
Check the fuel level, top up if necessary
Fuel filter clogged
Check the fuel filter, replace if necessary
Tank ventilation blocked
Ensure sufficient ventilation of the tank
Air in the fuel system
Check the fuel system for air leaks.
Check the ventilation valve.
Mechanical defect
Have checked by qualified expert per-
sonnel
Engine looses
power and speed
Fuel tank empty
Check the fuel level, top up if necessary
Fuel system clogged
Check the fuel filter, replace if necessary
Tank ventilation blocked
Ensure sufficient ventilation of the tank
Troubleshooting – Engine faults
BPR 35/60 D
106
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