Distributor Ignition System (V12)

2000 BMW 740iSECTION Distributor Ignition System (V12)
NOTE: For location of DME and fuel pump relays, see DME & FUEL PUMP RELAY LOCATIONΒ  table under PRELIMINARY INSPECTION & ADJUSTMENTS.

Switch off ignition. Remove distributor cap with ignition wiring harness. See REMOVAL, OVERHAUL & INSTALLATION article. Perform resistance measurement on individual components. See DISTRIBUTOR SPECIFICATIONSΒ  table. Check distributor rotor and distributor cap for hairline cracks and traces of scorching. If any are present, establish the cause and replace corresponding component.

DISTRIBUTOR SPECIFICATIONS

Application Specification
Winding Resistance (1) 1.1k Ohms
Clearance Between Stator & Rotor Tooth .011-.027" (.3-.7 mm)
Angled Plugs/Shielded Plugs (1) 1k Ohm
Spark Plug Connectors (1) 5k Ohms
Ignition Lead @ 68Β°F (20Β°C) (1) 20 Meg Ohms
Distributor (1) 1k Ohm
Position Sensor Coil Resistance (1) 80 Ohms
(1) Specification is approximate.
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.