Fiat 903 CC Automobile User Manual


 
Fault finding - cooling and heating systems
2•8 Cooling and heating systems
Overheating
Insufficient coolant in system
Pump ineffective due to slack drivebelt
Radiator blocked either internally or externally
Kinked or collapsed hose causing coolant flow restriction
Thermostat not working properly
Engine out of tune
Ignition timing retarded or auto advance malfunction
Cylinder head gasket blown
Engine not yet run-in
Exhaust system partially blocked
Engine oil level too low
Brakes binding
Engine running too cool
Faulty, incorrect or missing thermostat
Loss of coolant
Loose hose clips
Hoses perished or leaking
Radiator leaking
Filler/pressure cap defective
Blown cylinder head gasket
Cracked cylinder block or head
Heater gives insufficient output
Engine overcooled (see above)
Heater matrix blocked
Heater controls maladjusted or broken
Heater control valve jammed or otherwise
defective