Replace spark plugs - AP15.10-P-1580CA

ENGINE 103, 104 from 1.10.93, 111.920 /921 /940 /941 /942 /943 /944 /945 /946 /947 /952 /956 /957 /958 /960 /961 /970 /973 /974 /975 /977 /982 /983, 120 from 1.10.93 

Shown on engine HFM-SFI 

Shown on engine HFM-SFI 

Shown on engine 120.982/983 

Shown on engine 120.980/981 

	Removal:
	Risk of death  caused by contact with parts conducting high voltages.	Do not touch parts which conduct high voltages. Persons who have electronic implants (e.g. pacemakers) must not perform any work on the ignition system.	AS15.10-Z-0001-01A
	Notes on avoiding damage to ignition system	Engine 111 with PEC fuel injection and ignition system	AH15.10-P-0002-01B
	Notes on avoiding damage to ignition system	Engine 104, 111 with HFM-SFI fuel injection and ignition system	AH15.10-P-0002-01C
	Notes on avoiding damage to ignition system	Engines 104, 111, 112, 113, 119, 120 with ME-SFI fuel injection and ignition system	AH15.10-P-0002-01D
	Notes on avoiding damage to ignition system	Engines 103, 104, 119 with CFI fuel injection system	AH15.10-P-0002-01E
	Notes on avoiding damage to ignition system	Engine 104, 119, 120 with LH sequential multiport fuel injection system	AH15.10-P-0002-01F
1	Ignition: OFF
2.1	Loosen the cable duct partially	Engine 120.980/981 The cable duct must be loosened partially in order to replace the spark plug at cylinder 12. Detach partial rubber seal, remove the cover for the DI switching unit (A) and cable harness (B). Remove the mounting screws (arrows) for the cable duct. Detach the cable duct and press it towards the front.	ra15001201031x
3.1	Remove ignition coils
	Remove/install ignition coils	Engine 111.921/942/ 943/945/946/947/970/973/974/975/ 977	AR15.12-P-2003GA
		Remove ignition coils (T1/1, T1/2) with connected control lines and ignition lines.
		Engine 104, 111.920/940/941/944/960/961	AR15.12-P-2003G
		Remove ignition coils (T1/1, T1/2, T1/3) with connected control lines and ignition lines.
		Engine 120.982/983	AR15.12-P-2003FA
4	Release and unplug spark plug connector through slight rotation	Use pliers for straight spark plug connectors.
			Fig 8
5.1	Check the spark plug connectors on the inside for any secondary spark gaps (discoloration) and the sealing for any damage.	Engines 104, 111 The catalytic converter can get damaged with spark plug connectors having secondary spark gaps.
	Checking
5.2	Check spark plug connectors, ignition coil connectors and ignition lines for damage, deformation and crack formation	Only for engine 111 Replace, if necessary.
	Installation
6	Blow out spark plug stems and recesses with compressed air
7	Replace spark plugs	Install only approved spark plugs.
			*BA15.10-P-1001-01A
		Engine 103 with tapered seat (B)	Fig 5
		Engine 104, 111 with flat seat (C)	Fig 6
		Engine 120 with flat seat (C), cylinder 1 to 5 and 7 to 12	Fig 7
		Engine 120 with flat seat (C), cylinder 6	Fig 6
8	Connect spark plug connector	Ensure that the ignition cables are installed correctly.
9.1	Install ignition coils
	Remove/install ignition coils	Engine 111.921/942/ 943/945/946/947/970/973/974/975/ 977	AR15.12-P-2003GA
		Engine 104, 111.920/940/941/944/960/961	AR15.12-P-2003G
		Engine 120.982/983	AR15.12-P-2003FA
10.1	Assemble and fasten cable duct	Engine 120.980/981	ra15001201031x

Number	Designation		Engine 103	Engine 104, 110, 111, 113.940/941/942/943/944/948/960/961/962/963/964/965/966/967/968/969/971/980/981/982/984/986/992/993/995, 115, 117, 119, 120	Engines 112.910/911/912/913/914/915/916/917/920/921/922/923/940/941/942/943/944/945/946/947/949/951/953/954/955/960/961/970/972/973/975/976
BA15.10-P-1001-01A	Spark plugs	Nm	20	28	28