Pinpoint Test A: Glow Plug
WARNING: This page is about a different car, the 2019 Jaguar XE. However, it is still accessible from the selected car via links, so may be relevant.
- A1: GLOW PLUG RESISTANCE TEST NOTE: Before starting the measurement procedure operators must ensure equipment is calibrated in date and work area is clean
- Remove the glow plug from the vehicle. Refer to: REMOVAL AND INSTALLATION .
- Visually inspect the glow plug for dirt, corrosion, oil or lacquer. Clean the glow plug with alcohol wipes
- Secure the glow plug in a bench vice, making sure the jaws are covered with protective tape
- Turn the multimeter setting to resistance in ohms. (When testing resistance always take the resistance of the digital multimeter leads into account)
- Place the red probe point onto the glow plug (positive) terminal. Place the black probe point onto the glow plug metal body (ground). Ensure even and firm pressure is applied then allow the reading to settle
- Allow the multimeter reading to settle. Record the reading
Does the multimeter display less then 1 ohm?
Yes
Glow plug is within the service limit, re-install the glow plug. (It is important that the correct torque setting is used when refitting a glow plug into the cylinder head)
No
If the multimeter displays 1 ohm and above, check and install a new glow plug as required