B13 ENGINE STARTS WITH DIFFICULTY' - Alfa - 147 - eLearn

3022566 - B13 ENGINE STARTS WITH DIFFICULTY'

The engine, especially when cold, starts with difficulty only after repeated attempts. When the key is turned, the instruments light up as normal, the starter motor turns, but the engine has difficulty in starting.

0	PRELIMINARY CHECKS	All OK	Problems met	Operation
		Results of the tests
	Preliminarily check: the state of the spark plugs and relevant leads that the air filter is not blocked the condition of the air intake circuit	Continue to Step 1	Spark plugs worn	Replace the spark plugs [ Op. 5510D10
			Cables damaged	Replace leads
			Air intake circuit component damaged	Repair or replace the defective component
			Air filter blocked	Replace the filter element [ Op. 1048A14
1	CHECKING WITH DIAGNOSTIC EQUIPMENT	All OK	Problems met	Operation
	Connect the diagnostic equipment (Examiner or other instruments) to the diagnostic socket check for errors in the control unit plausibility of all the parameters	Continue to Step 2	An error is detected in the control unit	Continue following the instructions for the diagnostic equipment
		Continue to Step 2	Unreliable parameters	Continue following the instructions for the diagnostic equipment
2	PETROL VAPOUR RECOVERY SYSTEM CHECK	All OK	Problems met	Operation
	Check that the petrol vapour recovery system is working properly	Continue to Step 3	Air leaks	Restore the correct seal
			Engine oil vapour intake pipe broken	Replace the pipe Op. 1080D14
			Pipe between filter and intermediate coupling broken	Replace the pipe Op. 1080E61
			Pipe from intermediate joint to solenoid broken	Replace the pipe Op. 1080E63
3	DELIVERY PRESSURE CHECK	All OK	Problems met	Operation
	Check that the fuel pressure is correct Op. 0510C10	Continue to Step 4	Insufficient fuel pressure: pipe obstructed	Eliminate the blockage; if necessary replace the pipe Op. 1040B30
	Check that the fuel pressure is correct Op. 0510C10	Continue to Step 4	Insufficient fuel pressure: pump faulty.	Replace the pump assembly Op. 1040A70
4	CHECK ON TIMING	All OK	Problems met	Operation
	Check that the timing is correct	Continue to Step 5	Timing not correct	Restore the correct timing Op. 1032B10
5	CHECK ON CYLINDER COMPRESSION	All OK	Problems met	Operation
	Carry out the cylinder compression test Op. 0510A10	Continue to Step 7	Cylinder compression insufficient	Continue to Step 6
6	CHECK ON CAUSE OF INSUFFICIENT COMPRESSION	All OK	Problems met	Operation
	Carry out R/R on head to check the valve sealCheck the condition of the cylinders/piston rings	Continue to Step 7	Insufficient valve seal	Overhaul the cylinder head Op. 1016E10
		Continue to Step 7	Cylinders/piston rings worn	Repair the leak
7	CHECK ON CORRECT OPERATION	All OK	Problems met	Operation
	Check that the fault is no longer present		Fault persists: control unit faulty	Replace control unit Op. 1056B82 Search for the fault starting from another symptom'