Engine Faults - Zetor PRIMO HT 20 NC Operator's Manual

Engine Faults

FAULT
The engine
produces white
smoke
The engine
produces black
smoke
Engine power is
insufficient
Engine
The engine
warning light
comes on while
driving
The engine oil
warning light
comes on while
driving
The charging
warning light
comes on while
driving
TROUBLESHOOTING
PROBABLE CAUSE
Clogged air filter

Excessive amount of engine

oil
Insufficient fuel supply

Poor fuel quality

Excess fuel delivery

Insufficient nozzle pressure

The nozzle tip is clogged or

has carbon on it
Insufficient compression or

gas leakage from the valve
seat
Incorrectly adjusted valve play

Incorrect injection timing

Low fuel level

Clogged air filter

Low engine oil level

Low engine oil viscosity

Defective pressure switch

Defective oil pump

Clogged oil filter element

Defective power line

Defective alternator

Defective battery

Damaged alternator belt

SOLUTION
Check and clean

Check and set the correct amount

Have it repaired by an authorized

service
Add relevant fuel

Have it repaired by an authorized

service
Have it repaired by an authorized

service
Have it repaired by an authorized

service
Have it repaired by an authorized

service
Have it repaired by an authorized

service
Have it repaired by a service

center
Add fuel

Clean the element

Refill to the specified level

Replace with engine oil of the

correct viscosity
Replace the switch

Have it repaired by an authorized

service
Replace the oil filter

Check for loose or missing cable,

short circuit, poor grounding, and
repair as needed
Have it repaired by an authorized

service
Replace the battery

Replace belt

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