B13 ENGINE STARTS WITH DIFFICULTY' - Fiat - IDEA - eLearn

2398733 - 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
	First check: that the air filter is not blocked; the condition of the air intake circuit Remove the spark plugs and check the condition of the spark plugs and make sure that the gap is correct	Continue to Step 1	Air intake circuit component damaged	Repair or replace the defective component
			Air filter blocked	Replace the filter Op. 1048A10
			Spark plugs damaged	Replace the spark plugs
			Spark plugs wet	Dry the spark plugs Continue to Step 1
1	CHECKING WITH DIAGNOSTIC EQUIPMENT	All OK	Problems met	Operation
	Connect the Examiner diagnostic equipment to the diagnostic socket. Check: for errors in control unit; plausibility of parameters	Continue to Step 2	Error detected in the control unit	Continue according to the instructions for the diagnostic equipment
		Continue to Step 2	Parameters not plausible	Continue according to the instructions for the diagnostic equipment
2	CHECKING WITH DIAGNOSTIC EQUIPMENT	All OK	Problems met	Operation
	Carry out active diagnosis of canister solenoid	Continue to Step 3	Solenoid valve faulty	Replace the solenoid valve Op. 1080E26
3	PETROL VAPOUR RECOVERY SYSTEM CHECK	All OK	Problems met	Operation
	Check the petrol vapour recovery system seal	Continue to Step 4	Air leaks	Restore the correct seal
	Check the petrol vapour recovery system seal	Continue to Step 4	Pipes connected to supply broken	Replace the pipes Op. 1080E48
4	LOW SUPPLY PRESSURE CHECK	All OK	Problems met	Operation
	Check that the fuel pressure is correct Op. 0510C10	Continue to Step 5	Fuel pressure too low: supply pipe obstructed	Eliminate the blockage; if necessary replace the pipe
	Check that the fuel pressure is correct Op. 0510C10	Continue to Step 5	Low fuel pressure: defective pump	Replace the pump assembly Op. 1040A70
5	CHECK ON TIMING	All OK	Problems met	Operation
	Check that the timing is correct Op. 0510A20	Continue to Step 6	Timing not correct	Restore the correct timing Op. 1032B14
6	CHECK ON CYLINDER COMPRESSION	All OK	Problems met	Operation
	Carry out the cylinder compression test Op. 0510A10	Continue to Step 8	Cylinder compression insufficient	Continue to Step 7
7	CHECK ON CAUSE OF INSUFFICIENT COMPRESSION	All OK	Problems met	Operation
	Carry out R/R on head to check the valve seal Op. 1016C10 Check the condition of the cylinders/piston rings	Continue to Step 8	Insufficient valve seal	Overhaul the cylinder head Op. 1016E10
			Cylinders/piston rings worn	Repair the leak
			Faulty coupling between head/cylinder block-crankcase	Restore correct coupling
8	CHECK ON CORRECT OPERATION	All OK	Problems met	Operation
	Check that the fault is no longer present	End of diagnosis	Fault persists: control unit faulty	Replace control unit Op. 1056B82