Enarco ENAR ZEN Manuel D'instructions page 61

Insufficient output power. Deficient compression:
VIBRATING PLATES

Empty fuel tank

Water or dust has got in
C.- Fuel and compression system, etc, normal, but it does not start

They do not reach the start speed

Incorrect start procedure

High viscosity or excessive contamination of engine oil

Air retained in pipe

Engine overheated and exhaust soiled

Soiled cooling fins

Water in fuel filter

Carbon deposit in combustion chamber in relief port

Incorrect fume adjustment

Overload

Incorrect control of injection advance

Injector blocked

Speed fluctuates

Incorrect contact between the control yoke or the sleeve

Incorrect control spring

Equaliser plate and other sliding parts worn or operate incorrectly

The engine speed does not increase correctly

Incorrect valve synchronisation

Relief port or silencer blocked

Overload

Faulty ignition accompanied by white exhaust

Piston, Cylinder, Ring worn

Blocked injector

Upper and lower piston ring installed the wrong way round

Incorrect control of injection advance

Incorrect valve synchronisation. Injection pump gasket slack

Injection pump gasket slack

High fuel consumption (dark exhaust observed)

Leak in fuel pipes

Air filter element blocked

Faulty fuel as it contains impurities

Overload

Sliding part too worn or piston ring stuck

Faulty oil is being used

Negligence in oil replacement

Faulty or soiled air filter element

Stops suddenly with abnormal noise

Gearing or damage of piston or rod

Diluted lubricating oil, increasing its volume

Body of the injection pump piston worn

The engine does not stop, even when fuel supply is interrupted (or
causes overdrive)

Too much oil

Incorrect installation of control system

Injection pump frame displaced
ZEN / ZEN-E
en
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