Repair Service Manual

REPAIR MANUAL
1
LOMBARDINI 523 MPI engine
REPAIR
Table of probable anomalies according to symptoms
The engine does not start
Difficult starting with cold engine
Difficult starting with warm engine
Overheating motor
Unstable idle running
Idle running too high
Idle running too low
The engine stops at idle
The engine stops sometimes
Jolting upon reacceleration
Jolting once idle running stabilized
Jolting acceleration
Low performance
High consumption
Noise (beating or rattling)
Crackling
Blue smoke
White smoke
Damaged catalyst
Air supply
Air filter
Leak on the manifold
Butterfly body
Fuel supply
The pressure regulator stays open
The pressure regulator stays closed
Clogged pipes
No pump flow
Running injector
Poor fuel quality
Ignition
Coil (coil short-circuit)
Faulty spark plug cable
Worn spark plugs
Spark plugs too cold
Spark plugs too warm
Exhaust
Leaks on the manifold
Oxygen probe
Engine and mechanical
Leaky valve
Valve stuck
Bad valve sealing guide
Jacket / piston wear
Embedded combustion chamber
Insufficient cooling
Damaged cylinder head gasket
Damaged revolution sensor phonic wheel
Faulty hydraulic push rods
Oil level too high
Electrical equipment
Low contact on fuel pump connector
Burnt fuse
Faulty relay
Faulty engine wiring
Faulty battery elements
Battery terminals sulphated