18 · Diagnostics

B13 Engine starts with difficulty

Make: Alfa Romeo
Model: 147 Factory Service Manual
Year: 2000–2002
Section: Starting › B13 Engine starts with difficulty

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Fault diagnosisB13 Engine starts with difficulty

B13 Engine starts with difficulty

Step	Test procedure	Result	Action
0	PRELIMINARY CHECKS First check: the condition of the spark plugs and leads that the air filter is not blocked the condition of the air intake circuit	OK	Move onto step 1
		Plugs worn	Replace the spark plugs [Op. 5510D10 End of diagnosis
		Damaged leads	Replace leads End of diagnosis
		Component of air intake circuit damaged	Repair or replace the faulty component End of diagnosis
		Air filter clogged	Replace the filter element [Op. 1048A14 End of diagnosis
1	CHECK WITH DIAGNOSTIC EQUIPMENT Connect the diagnostic equipment (Examiner or other instruments) to the diagnostic socket Verify: that there are no errors in the control unit the plausibiilty of the parameters	OK	Move onto step 2
		Error detected in the control unit	Continue following the instructions for the diagnostic equipment End of diagnosis
		Implausible parameters	Continue following the instructions for the diagnostic equipment End of diagnosis
2	CHECK ON PETROL VAPOUR RECOVERY SYSTEM Check that the petrol vapour recovery system is working properly	OK	Move onto step 3
		Air leaks	Renew the correct seal End of diagnosis
		Engine oil vapour intake pipe broken	Replace the pipe Op. 1080D14 End of diagnosis
		Pipe from filter to intermediate joint broken	Replace the pipe Op. 1080E61 End of diagnosis
		Pipe from intermediate joint to solenoid broken	Replace the pipe Op. 1080E63 End of diagnosis
3	CHECKING DELIVERY PRESSURE Check that the fuel pressure is correct Op. 0510C10	OK	Move onto step 4
		Insufficient fuel pressure: pipe blocked	Eliminate the blockage; if necessary replace the pipes Op. 1040B30 End of diagnosis
		Insufficient fuel pressure: pipe blocked	Repplace the pump assembly Op. 1040A70 End of diagnosis
		Insufficient fuel pressure: pipe blocked	Replace the pump assembly Op. 1040A70 End of diagnosis
		Insufficient fuel pressure: pipe blocked	Replace pump assembly Op. 1040A70 End of diagnosis
4	CHECKING TIMING Check that the timing is correct	OK	Move onto step 5
4	CHECKING TIMING Check that the timing is correct	Timing incorrect	Restore the correct timing Op. 1032B10 End of diagnosis
5	CHECKING CYLINDER COMPRESSION Carry out the cylinder compression test Op. 0510A10	OK	Move onto step 7
5		Insufficient cylinder compression	Move onto step 6
6	INSUFFICIENT COMPRESSION CAUSE CHECK Carry out R/R on head to check the valve seal Check the condition of the cylinders/piston rings	OK	Move onto step 7
		Insufficient valve seal	Overhaul the cylinder head Op. 1016E10 End of diagnosis
		Cylinders/piston rings worn	Repair the leak End of diagnosis
7	CHECKING CORRECT OPERATION Check that the fault is no longer present	OK	Incorrect selection of diagnostic procedure
7		Fault persists: control unit defective	Replace control unit Op. 1056B82 Incorrect selection of diagnostic procedure

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Parts & tools for this job Staging For 2000 Alfa Romeo 147

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