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Autopapyrus · Citroën Jumpy 2.0 HDi DW10 120 hp (2014)
https://autopapyrus.com/guides/citroen/jumpy/glow-plug-replacement/
Compiled automatically from service literature and owner experience. Specs are for the typical configuration — check them against your exact car before you start.

Citroën Jumpy 2.0 HDi DW10 120 hp (2014): Glow Plug Replacement

The DW10 120 hp engine has four glow plugs, one per cylinder. Signs of wear: hard starting when cold, white smoke, the glow plug light or Check Engine light coming on, and fault codes for the preheating circuit. The main risk of this job is snapping a seized plug off in the cylinder head. That is why you need care, a warm engine and penetrating oil on the threads.

Difficulty: Medium Time: 1-2 hours (if the threads are not seized) Steps: 14 Tools: Socket set and ratchet with a long extension, 8 mm or 10 mm socket for the terminal nut (depending on the plug), torque wrench for low torque (5-20 N·m), thin-wall deep glow plug socket, multimeter, copper grease, penetrating oil (WD-type), compressed air or a brush, diagnostic scan tool (to check for fault codes)

Part

  • 🔩 Set of 4 glow plugs for the 2.0 HDi (DW10, 16V). Made by Bosch, NGK, Beru and Denso. I am not giving an OE number: glow plugs differ by engine version and supplier, so choose by part name and quantity (4 pcs.), and match the length and connector type to the old plug

Step by step

14 steps
  1. Shut off the engine and let it cool to warm, about 40-50 °C. A cold aluminum head grips the plug harder, and a hot one is easy to burn yourself on. Disconnect the negative battery terminal.
  2. Remove the decorative plastic engine cover and, if needed, any air duct or hoses that block access to the glow plug area. The plugs sit along the cylinder head on the intake manifold side, and their supply wires or bus bar are visible from above.
  3. Blow out the area around the plugs with compressed air so dirt does not fall into the cylinder when you remove them.
  4. Disconnect the glow plug power connector or bus bar. If power is supplied through separate terminals, undo the small nuts on the plug terminals and remove the terminals. They are fragile and the torque is low, so do not use force.
  5. To diagnose, measure the resistance of each plug with a multimeter without removing it. A good plug has very low resistance, a fraction of an ohm or about 1 ohm. An open circuit (infinity) means the plug is faulty. If you are replacing the whole set anyway, you can skip this step.
  6. Soak the threads of each plug generously with penetrating oil and wait 10-15 minutes, or longer if you can.
  7. Unscrew the plugs one at a time, without jerking. If a plug turns hard, turn it back a quarter turn and then forward again, adding more oil. Heavy resistance, squeaking or a hard stop means a risk of breaking it: stop and let the oil work.
  8. Inspect the removed plugs. An intact plug comes out with the entire heating rod. If the rod stays inside, you need a special extractor. That is a job for a repair shop, so do not try to pick out the broken piece with a screwdriver.
  9. Before installing, apply a thin layer of copper grease to the threads of the new plugs, but not to the heating tip or the contacts. Thread the plugs in by hand until they stop, to avoid cross-threading.
  10. Tighten each plug with a torque wrench. For plugs with an M8 thread, the typical torque is about 8-12 N·m (6-9 lb-ft); check the exact value against the markings or documentation of the plugs you bought. Do not overtighten: the body is thin.
  11. Install the terminals or the power connector. Tighten the terminal nuts very lightly, about 1-2 N·m (9-18 lb-in), only until the contact is secure.
  12. Reinstall the hoses, air duct and engine cover, and reconnect the battery.
  13. Turn the ignition on and make sure the glow plug light comes on and goes off as usual. Start the engine and check that it idles smoothly.
  14. Scan the engine control unit for preheating circuit fault codes and clear them. If a code comes back, check the glow plug relay or control unit and the wiring.

Common mistakes and warnings

  • The main danger is snapping a plug off in the cylinder head: removing the broken piece requires removing the head or special tools, and the repair is expensive. Do not work on a hot engine and do not use heavy force. If the plugs will not budge, it is better to go to a repair shop. Replace all four plugs as a set: they have the same wear, and new plugs next to old ones will fail quickly. While you are at it, check the glow plug relay or control unit: a faulty unit can kill the new plugs.