Auto Systems and Repair: Glow Plug
Symptoms of Wear or Failure
- Illumination of the Check Engine Light
- Hard starting when the engine is cold
Related Repair Advice
- For best results and to avoid future problems, replace the glow plugs as a complete set. Be sure to verify that the glow plug relay is operating properly.
- If the glow plug relay, injector pump timing, and engine compression are not properly checked, then replacing the glow plugs may not address the initial problem