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Fiat Stilo Factory Service Manual (2001-2007)22 · Fault diagnosis
22 · Diagnostics

Engine coolant consumption

Make
Fiat
Model
Stilo Factory Service Manual
Year
2001–2007
Section
Consumption /leaks/ wear › Engine coolant consumption
Fault diagnosisEngine coolant consumption

ENGINE COOLANT CONSUMPTION

The engine coolant consumption is high.

Results of the tests
0PRELIMINARY CHECKSAll OKProblems metOperation
First visually inspect the cooling system to check that there are no coolant leaks.Continue to Step 1There are leaks

Continue according to the instructions for the

See table X10

1COOLING SYSTEM LEAKAGE CHECKAll OKProblems metOperation
Connect the test equipment replacing the expansion tank cap, pressurize the system and check that the pressure remains at the recommended value and that there are no leaksContinue to Step 3Pressure not correct without leaksContinue to Step 2
Pressure not correct with leaks

Continue according to the instructions for the

See table X10

2CHECKING CYLINDER HEADAll OKProblems metOperation

Remove the head.

Check:

  • That the cylinder head surface planarity is correct
  • That the planarity of the support surface for the cylinder head on the cylinder block is correct;
Continue to Step 3Cylinder head plane defectiveRegrind the cylinder head surface
Cylinder block/crankcase plane defectiveRegrind the cylinder block/crankcase plane
Planes correct, head gasket faultyReplace the cylinder head gasket
3CHECK ON CORRECT OPERATIONAll OKProblems metOperation
Check that the fault is no longer presentEnd of diagnosis

Parts & tools for this job For 2001 Fiat Stilo

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