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.
Non-DIS Ignition System
1992 BMW 735iSECTION Non-DIS Ignition System
- Always disconnect battery or ground cable (located on right rear seat frame) when working on electrical systems, charging battery or welding.
- Secondary (high voltage) side of ignition system must be loaded with at least 4000 ohms. Never connect a shielded capacitor or test light to coil terminal No. 1. Never connect lead of ignition coil terminal No. 1 to ground or battery voltage.
- When checking compression, DME master relay must be removed. DO NOT disconnect lead of ignition coil terminal No. 1 to prevent engine from starting. Never disconnect battery or leads on alternator or starter while engine is running.
NOTE:
For location of DME master and fuel pump relays, see DME & FUEL PUMP RELAY LOCATION table under PRELIMINARY INSPECTION & ADJUSTMENTS.
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:
- • 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.