Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSBMW1987L7 (E23) L6-3430CC 3.4L SOHC (M30)REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTIGNITION SYSTEMSPARK PLUGTECHNICAL SERVICE BULLETINSIGNITION - SPARK PLUG APPLICATION
1987 BMW L7 (E23) L6-3430cc 3.4L SOHC (M30)
Ignition - Spark Plug Application
1987 BMW L7 (E23) L6-3430cc 3.4L SOHC (M30)SECTION Ignition - Spark Plug Application
Group 12
Engine - Electrical
Bulletin Number
12 03 85 (1085)
Information Sheet
Woodcliff Lake, NJ
April 1993
Product Engineering
This Service Information bulletin supersedes S.I. 12 03 85 (1085) and the spark plug application chart dated September 1992 which should be removed from your S.I. binder and discarded.
It includes the spark plug manufacturer and plug designation for the 530i and 540i models with M60 engines.
Engine - Electrical
Bulletin Number
12 03 85 (1085)
Information Sheet
Woodcliff Lake, NJ
April 1993
Product Engineering
This Service Information bulletin supersedes S.I. 12 03 85 (1085) and the spark plug application chart dated September 1992 which should be removed from your S.I. binder and discarded.
It includes the spark plug manufacturer and plug designation for the 530i and 540i models with M60 engines.
RENDER: 1.0x
NO RELATED
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Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.