312000204 - X010 ENGINE COOLANT LEAKS

An engine coolant leak can be seen with consequent dripping and/or fouling of the engine.
TEST RESULTS
0PRELIMINARY CHECKSALL OKPROBLEMS ENCOUNTEREDACTION
- Carry out an initial visual inspection to locate the component that is leaking or the area of the leak.- Check that there is no engine oil in the coolant.- Check that there is no water or emulsion in the engine oil.- If the visual check is not sufficient, wash the engine, dry it and start slowly to bring it up to the correct temperature. Test the watertightness of the system to identify the leakOp. 0510C30 Move on to Step 11. Leaks from pipes2. Leak from the radiator3. Leak from the expansion tank4. Leak from the water pump5. Leak from the thermostat unit6. Leak from the cylinder head7. Leak from the heater radiator8. Oil or water leaking between the engine and the cooling circuit1. Move on to Step 12. Move on to Step 2. Move on to Step 34. Move on to Step 45. Move on to Step 56. Move on to Step 67. Move on to Step 78. Move on to Step 8
1PIPE CHECKALL OKPROBLEMS ENCOUNTEREDACTION
Check the condition of the pipes and the seal. Specifically:- the condition of the bands making sure they are correctly fitted;- the condition of the hoses, connectors and plugsMove on to Step 2Tightening not correct or components damaged.Restore the correct tightening or replace the components involved
2RADIATOR CHECKALL OKPROBLEMS ENCOUNTEREDACTION
Check the condition of the radiatorMove on to Step 3Radiator damaged or distorted.Replace the radiatorOp. 1088B20 ENGINE COOLING RADIATOR - R + R
3EXPANSION TANK CHECKALL OKPROBLEMS ENCOUNTEREDACTION
Visually check:- the condition of the expansion tank;- the seal of the capCheck the condition of the cap breather valve.Move on to Step 4Tank damaged or distorted.Replace the tank or the cap
4WATER PUMP CHECKALL OKPROBLEMS ENCOUNTEREDACTION
Visually check:- the condition of the water pump;- the seal of the gaskets.Move on to Step 5Water pump faulty.Replace the water pump or the gasketsOp. 1088C10     Op. 1088C14 WATER PUMP - R + R WITH TIMING BELT(S) REMOVED
5CHECK THERMOSTAT UNITALL OKPROBLEMS ENCOUNTEREDACTION
Visually check:- the condition of the thermostat unit;- the seal of the gaskets.Move on to Step 6Thermostat unit faulty.Replace the thermostat unit or the gaskets    Op. 1088C30 THERMOSTAT UNIT - R+R
6CYLINDER HEAD GASKET CHECKALL OKPROBLEMS ENCOUNTEREDACTION
Check:- that the cylinder head is correctly tightened;- the seal of the gasket.Move on to Step 71. Cylinder head tightening incorrect2. Gasket damaged.1. Restore correct tightening.2. Replace the seal.
7HEATER RADIATOR CHECKALL OKPROBLEMS ENCOUNTEREDACTION
Check the condition of the heater radiatorMove on to Step 8Heater radiator damaged or distorted.Replace the heater radiator    Op. 5040C10 AIR CONDITIONING CASING - R.R
8CHECK ENGINE BLOCK SURFACEALL OKPROBLEMS ENCOUNTEREDACTION
Remove the cylinder head.Op. 1016C10 Check that there are no:- oil deposits on valves;- defects on engine block;- defects on cylinder head gasket.Move on to Step 91. Cylinder block plane defective.2. Oil deposits on the valves.1. Level the engine block.2. Overhaul the head    Op. 1016E10 SINGLE CYLINDER HEAD, REMOVED - OVERHAUL
9CORRECT OPERATION CHECKALL OKPROBLEMS ENCOUNTEREDACTION
Check that the fault is no longer presentEnd of diagnosisThe fault persists.Contact technical service for further information on the problem.