			Test results
1	COMPONENT CONCERNED	ELECTRICAL CONNECTIONS CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Connections on injector coils and engine management control unit	Check for loose electrical connections at the coil connector, the injectors and at the engine management control unit.	Go to Step 2	Presence of loose electrical connections.	Restore the correct connections.
2	COMPONENT CONCERNED	WIRING CONTINUITY CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Coil and injector wiring	Check for breaks in the wiring continuity caused by oxidised or corroded terminals	Go to Step 3	Breaks in the wiring continuity.	Restore the correct continuity for the wiring.
3	COMPONENT CONCERNED	WIRING INSULATION CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Coil and injector wiring	Check the condition of the wiring's insulation (possible short circuit to Vbatt of coil and/or injector control)	Go to Step 4	Wiring insulation faulty.	Restore correct wiring insulation.
4	COMPONENT CONCERNED	FUEL PRESSURE CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Electric fuel pump	Check that the fuel pump is working properly	Go to Step 5	Fuel pump not working properly	Replace the fuel pump Op. 1040A70 SUBMERGED PUMP ASSEMBLY COMPLETE WITH LEVEL GAUGE CONTROL - R + R
5	COMPONENT CONCERNED	CHECK ON SEEPAGE IN INTAKE MANIFOLD	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Intake manifold	Check for the presence of any seepage in the intake/exhaust manifold	Go to Step 6	Seepage inside the intake/exhaust manifold.	Restore correct operation
6	COMPONENT CONCERNED	CYLINDER COMPRESSION CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Engine	Carry out cylinder compression test Op. 0520G15 COMPRESSION TEST - CHECK WITH EXAMINER WITH SPARK PLUGS/INJECTORS REMOVED	Go to Step 7	Cylinder compression insufficient.	Go to Step 10
7	COMPONENT CONCERNED	CYLINDER HEAD CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Cylinder head gasket	Check: - that the cylinder head is correctly tightened; - the seal of the gasket; - the seal of the valve oil seals.	Go to Step 8	Cylinder head tightening not correct.	Restore the correct cylinder head tightening.
8	COMPONENT CONCERNED	CYLINDER HEAD GASKET CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Cylinder head gasket	Check the correct cylinder head tightening	Go to Step 9	Gasket damaged.	Replace the cylinder head gasket Op. 1016C10 SINGLE CYLINDER HEAD - R.R. AND REPLACE GASKET
9	COMPONENT CONCERNED	VALVE OIL SEAL CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Valve oil seals	Check the correct sealing of the valve oil seals	Go to Step 10	Oil seal compromised.	Restore the correct oil seal.
10	COMPONENT CONCERNED	CAUSE OF INSUFFICIENT COMPRESSION CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Valves	After having removed the cylinder head Op. 1016C10 SINGLE CYLINDER HEAD - R.R. AND REPLACE GASKET check: - the valve seal; - cylinder/piston ring wear.	Go to Step 11	Valve seal insufficient.	Overhaul the cylinder head.
11	COMPONENT CONCERNED	CAUSE OF INSUFFICIENT COMPRESSION CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Piston rings	Check the cylinder/piston ring wear.	Go to Step 12	Cylinder/ring wear outside tolerance.	Restore correct operating clearances.
12	COMPONENT CONCERNED	TIMING CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Engine	Check that the timing is correct	Go to Step 13	Timing not correct.	Restore the correct timing
13	COMPONENT CONCERNED	SPARK PLUG CONDITION CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Spark plugs	Check the condition of the spark plugs (fouling by engine oil or unburnt fuel)	Go to Step 14	Spark plugs fouled.	Replace spark plugs Op. 5510D10 SPARK PLUGS - R+R
14	COMPONENT CONCERNED	INJECTOR CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Injectors	Check the correct injector operation	Go to Step 15	Injectors not working properly.	Replace the injectors Op. 1056B68 SET OF INJECTORS - R + R WITH FUEL MANIFOLD PIPE REMOVED - INCLUDES SEAL REPLACEMENT
15	COMPONENT CONCERNED	COIL OPERATION CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Ignition coils	Check the ignition coils are working correctly See Test 5510CD RPM SENSOR COIL OPERATION CHECK	End of diagnosis	Ignition coils not working.	Replace ignition coils Op. 5510C14 IGNITION COIL/S - R.R.