1985 BMW 524tdFACTORY OEM SERVICE PROCEDURE

Electric Shut-Off

The distributor injector pump has an electric shut-off, which permits shutting off the engine from the ignition switch. The shut-off device consists of a pulling magnet which keeps the feed bore to the high pressure chamber open when the engine is running.

The engine is stopped by switching off power flow to the magnet. This closes the feed bore to the high pressure chamber and the distributor piston cannot draw in fuel.

Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.

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.