Engine coolant consumption
- Make
- Alfa Romeo
- Model
- 159 Factory Service Manual
- Year
- 2005–2011
- Section
- Consumption /leaks/ wear › Engine coolant consumption
Fault diagnosisEngine coolant consumption
ENGINE COOLANT CONSUMPTION
Coolant consumption is high (frequent topping up is required)
| 0 | PRELIMINARY CHECKS | All OK | Problems encountered | Operation |
|---|---|---|---|---|
| Bleed the air and check the fault does not recur. | End of diagnosis | The fault recurs | Move on to Step 1 | |
| 1 | CHECK ON THE EFFICIENCY OF THE EXPANSION TANK CAP | All OK | Problems encountered | Operation |
| Check the efficiency of the expansion tank cap. | Move on to Step 2 | Cap inefficient. | Replace the cap. | |
| 2 | COOLING SYSTEM LEAKAGE TEST | All OK | Problems encountered | Operation |
Check the seal of the cooling system | Move on to Step 3 | There are engine cooling system leaks. | Proceed as instructed in the | |
| 3 | CHECK FOR GURGLING | All OK | Problems encountered | Operation |
| Check that no gurgling or oil is present in the coolant reservoir. | Move on to Step 4 | Presence of fluid or air bubbles: head gasket damaged. | Replace the damaged gasket. | |
| 4 | CHECK CYILNDER HEAD HYDRAULIC SEAL | All OK | Problems encountered | Operation |
| Check the hydraulic seal of the cylinder head. | Move on to Step 5 | Seal not efficient. | (only for 3.2 V6 version) Remove the cylinder head Op. 1016C10 SINGLE CYLINDER HEAD - R.R. AND REPLACE GASKET (only for 3.2 V6 version) Replace the head | |
| 5 | CHECK ENGINE MONOBLOC HYDRAULIC SEAL | All OK | Problems encountered | Operation |
| Check the hydraulic seal of the monobloc | Move on to Step 6 | Seal not efficient. | Replace the monobloc | |
| 6 | CHECK ON CORRECT OPERATION | All OK | Problems encountered | Operation |
| Check that the fault is no longer present. | End of diagnosis | The fault persists. | Contact Technical Service for further information on the problem. |
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