
7.4 Engine problems
Fault description
Cause
Remedy
Engine does not start or does not
start immediately, but can be cranked
with the starter motor
Throttle lever in stop or idle
speed position.
Set the lever to “Start” position.
No fuel at the injection
pump.
Fill in fuel
Check the entire fuel system system-
atically.
Insufficient compression
Check, adjust the valve clearance.
- incorrect valve clearance
Check, adjust the valve clearance.
- Wear on cylinder or piston
rings
Have examined by a specialist.
Injection nozzle out of order Have examined by a specialist.
Additionally on engines with mechan-
ical oil pressure monitoring
No oil pressure
Check the oil level.
Activate mechanical oil pressure
monitoring
With low temperatures
Temperature below starting
limit.
Observe cold start instructions.
Fuel gelled because of
insufficient cold compati-
bility.
Pull the fuel hose off the fuel lift pump
and check whether fuel runs out of
the fuel pump clear and without gel.
In case of gelled fuel you should
either warm the engine up or drain
the complete fuel supply system. Fill
with a temperature resistant fuel mix-
ture.
Starter speed too low:
Replace engine oil with oil of correct
viscosity
- Oil with too high viscosity
Replace engine oil with oil of correct
viscosity
- Insufficiently charged bat-
tery
Check the battery, if necessary con-
sult a specialist workshop
The starter is not switched on or the
engine does not crank
Fault in the electric system: Check electric equipment and related
components or consult the our cus-
tomer service.
Trouble shooting – Engine problems
BPR 70/70 D
81
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