D35 LOW ENGINE OIL PRESSURE - Alfa - 156 - eLearn

3233023 - D35 LOW ENGINE OIL PRESSURE

The special warning light indicates a decrease in the engine oil pressure.

0	PRELIMINARY CHECKS	All OK	Problems met	Operation
		Results of the tests
	Preliminarily check: the engine oil level engine coolant level Check that the type of oil is suitable for the engine in question	Continue to Step 1	Engine oil level too low	Top up the engine oil level Op. 1084A10
			Engine coolant level	Top up the engine coolant level Op. 1088A10
			Oil unsuitable	Top up with correct type of oil
1	ENGINE OIL TYPE AND FILTER CHECK	All OK	Problems met	Operation
	Check that the engine oil is the recommended type in the correct quantityCheck that the oil filter is the recommended type and that it is correctly fitted	Continue to Step 2	Engine oil unsuitable	Change the engine oil
		Continue to Step 2	Oil filter unsuitable or incorrectly fitted	Replace the engine oil filter Op. 1084B30
2	OIL PUMP CHECK	All OK	Problems met	Operation
	Check the condition of the oil pump. In particular, check: condition and cleanliness of oil pressure relief valve condition of spring	Continue to Step 3	Oil pump damaged or distortedPressure relief valve damaged	Replace the oil pump Op. 1084B10
3	CHECK ON LUBRICATION SYSTEM	All OK	Problems met	Operation
	Carry out a general check on the lubrication system Op. 0510C20	Continue to Step 4	Faults in the lubrication system	Restore the lubrication system
4	MAIN/BIG END BEARINGS CHECK	All OK	Problems met	Operation
	Overhaul the engine: in particular, check the condition of the crankshaft and big end bearings (see ENGINE OVERHAUL, Subassembly 1028)	Continue to Step 5	Main and big end bearings faulty	Replace main and big end bearings Op. 1024A10
5	CHECK ON CORRECT OPERATION	All OK	Problems met	Operation
	Check that the fault is no longer present	End of diagnosis	Fault persists	Search for the fault starting from another symptom'