23 · Diagnostics

Engine coolant consumption

Fault diagnosisEngine coolant consumption

ENGINE COOLANT CONSUMPTION

The coolant consumption is high (it needs topping up frequently). Versions with and without air conditioning.

0	PRELIMINARY CHECKS	All OK	Problems met	Operation
		Results of the tests
	Bleed the air and check that the fault no longer occurs	Continue to Step 6	The fault is still present	Continue to Step 1
1	CAP EFFICIENCY CHECK	All OK	Problems met	Operation
	Check the efficiency of the cap	Continue to Step 2	Cap not working properly	Replace the cap
2	SYSTEM LEAKAGE CHECK	All OK	Problems met	Operation
	Carry out the cooling system leak test	Continue to Step 3	There are coolant leaks	Continue according to the instructions in See table X10
3	BUBBLING CHECK	All OK	Problems met	Operation
1.1 1.2 8v	Check that there are no bubbles or oil in the coolant reservoir	Continue to Step 4	Presence of fluid bubbling: cylinder head gasket damaged	Replace the cylinder head gasket.
4	CYLINDER HEAD HYDRAULIC SEAL CHECK	All OK	Problems met	Operation
	Check the hydraulic seal of the cylinder head	Continue to Step 5	Seal ineffective	Replace the cylinder head.
5	ENGINE MONOBLOC HYDRAULIC SEAL CHECK	All OK	Problems met	Operation
	Check the hydraulic seal of the engine monobloc	Continue to Step 6	Seal ineffective	Replace the engine block (monobloc)
6	Continue as instructed by the tester	All OK	Problems met	Operation
	Check that the fault is no longer present	End of diagnosis	The fault is still present	Continue to Step 1

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