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 MANUALSBMW1993740IL (E32/2) V8-3982CC 4.0L DOHC (M60)REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSDESCRIPTION AND OPERATIONDIGITAL MOTOR ELECTRONIC (DME)FUNCTIONAL DESCRIPTIONSIGNITION SYSTEM WITH STATIC HIGH TENSION DISTRIBUTION
1993 BMW 740iL (E32/2) V8-3982cc 4.0L DOHC (M60)
Ignition System With Static High Tension Distribution
1993 BMW 740iL (E32/2) V8-3982cc 4.0L DOHC (M60)SECTION Ignition System With Static High Tension Distribution
DESCRIPTION
A separate output stage-controlled ignition coil is provided for each cylinder which supplies high tension (up to 32 kV) via the spark plug connectors to the spark plugs. This makes it possible to quickly and independently control changes in the ignition timing (ignition angle).
Due to the lack of any rotating parts, the effective range for ignition timing (angle) control has been increased by approx. 10° crank angle to 59° crank angle per cylinder. A camshaft sensor is used to maintain the correct firing order.
The spark plugs feature sealed ground electrodes which reduce burn-off wear and increase the change intervals.
A separate output stage-controlled ignition coil is provided for each cylinder which supplies high tension (up to 32 kV) via the spark plug connectors to the spark plugs. This makes it possible to quickly and independently control changes in the ignition timing (ignition angle).
Due to the lack of any rotating parts, the effective range for ignition timing (angle) control has been increased by approx. 10° crank angle to 59° crank angle per cylinder. A camshaft sensor is used to maintain the correct firing order.
The spark plugs feature sealed ground electrodes which reduce burn-off wear and increase the change intervals.
RENDER: 1.0x
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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.