B13 ENGINE STARTS WITH DIFFICULTY'' - Alfa - GT - eLearn

125000464 - B13 ENGINE STARTS WITH DIFFICULTY''

The engine, particularly when cold, starts with difficulty and only after repeated attempts. When the key is turned the instruments light up as normal, the starter motor turns, but the engine is difficult to start.

0	PRELIMINARY CHECKS	All OK	Problems encountered	Operation
		Results of the tests
	First, check: if there is sevice information on the subject The condition of the air intake circuitRemove the spark plugs and check their state and that the electrode gap is correct	Move on to Step 1 1	Air intake circuit component damaged	Repair or replace the damaged component
			Air filter blocked	Replace the filter Op. Op. 1048A10 AIR CLEANER FILTERING ELEMENT - REPLACE
			Spark plugs damaged	Replace the spark plugs Op. Op. 5510D10 SPARK PLUGS - R+R
			Spark plugs wet	Dry the spark plugsMove on to Step 1 1
1	CHECK USING DIAGNOSTIC EQUIPMENT	All OK	Problems encountered	Operation
	Connect the diagnostic equipment (Examiner or other instruments) to the diagnostic socket. Check: That there are no errors in the control unit; Parameter plausibility in particular Rail pressure setting (check during starting in particular) Engine temperature	Move on to Step 2 1	Error detected in the control unit	Proceed as instructed by the diagnostic tester
			Parameters not plausible	Proceed as instructed by the diagnostic tester
			Pressure measured differs greatly from setting	Proceed with checking the low pressure circuit, high pressure pump, pressure regulator, wiring, control unit
2	LOW SUPPLY PRESSURE CIRCUIT CHECK	All OK	Problems encountered	Operation
	Check that the fuel pressure is correct Op. Op. 0510C10 FUEL SYSTEM - CHECK DELIVERY PRESSURE	Move on to Step 3 1	Fuel pressure too low: supply pipe obstructed	Eliminate the obstructions, if necessary, replace the pipe
		Move on to Step 3 1	Fuel pressure too low: pump defective	Replace the pump assembly Op. Op. 1040A70 SUBMERGED PUMP ASSEMBLY COMPLETE WITH LEVEL GUAGE CONTROL - R + R
3	TIMING CHECK	All OK	Problems encountered	Operation
	Check that the valve gear timing is correct Op. Op. 0510A20 TIMING GEAR WITH BELT DRIVE - CHECK - CARRY OUT OPERATION WITH CAM COVER(S) REMOVED AND TAPPETS ADJUSTED	Move on to Step 4 1	Valve gear timing not correct	Restore the correct valve gear timing Op. Op. 1032B10 TOOTHED TIMING BELT - R + R FOR TIMING ADJUSTMENT OR REPLACEMENT
4	CYLINDER COMPRESSION CHECK	All OK	Problems encountered	Operation
	Carry out the cylinder compression check Op. Op. 0510A10 CYLINDER COMPRESSION - CHECK FOR LOOSE SPARK PLUGS OR INJECTORS	Move on to Step 6 1	Cylinder compression insufficient	Move on to Step 5 1
5	CHECK ON CAUSE OF INSUFFICIENT COMPRESSION	All OK	Problems encountered	Operation
	- R/R head [PR_1016C10] for valve leakage test Check condition of cylinders/piston rings	Move on to Step 6 1	Valve seal insufficient	Overhaul the cylinder head Op. Op. 1016E10 SINGLE CYLINDER HEAD, REMOVED - OVERHAUL
			Cylinders/piston rings worn	Restore the seal
			Cylinder head/cylinder block-crankcase matching faulty	Restore correct matching
6	CHECK ON CORRECT OPERATION	All OK	Problems encountered	Operation
	Check that the fault is no longer present	End of diagnosis	Fault persists: control unit defective	Replace the engine management control unit Op. 1056F82