Video – How to Test Glow Plugs – Measure the Resistance (Removed from the Vehicle):
Testing Glow Plugs When Removed From the Vehicle:
Is a more accurate way to check if they’re OK. The brief description that follows, may help explain why your vehicle doesn’t start easily when cold, and why we need to test the glow plugs…
Petrol engines start with the assistance of a spark from a spark plug to ignite the fuel. Whereas diesel engines start using the compression of the fuel mixture. However, diesels don’t like starting when cold. Hence diesel engines are fitted with glow plugs that heat the air fuel mix to aid starting when cold.
If your diesel engine is running well and starts easily when the engine is warm, but won’t start when cold, (or takes ages to start when cold). It could be an issue with the glow plugs, the glow plug system (module, relay, or voltage supply). This video shows how to check the glow plugs with a multimeter (test meter) when they’ve been removed.
Ordering Parts (Glow Plugs, Test Meter, Tools, etc):
The following table gives examples of the test equipment, tools, etc you can buy to fix your vehicle. If you’re not sure what you need, sometime it’s worth having a look? The list below may give you an idea of what’s what’s available, what to look for and how much it costs…
Ordering Parts – Examples of What You Can Buy:
| Glow Plug Prices | |
|---|---|
| Item | Location |
 |
Glow Plugs |
| Test Equipment | |
| Glow Plug Tools | |
| Jumper Cables | |
 |
Glow Plugs |
| Test Equipment | |
| Glow Plug Tools | |
| Jumper Cables | |
 |
Glow Plugs |
| Test Equipment | |
| Glow Plug Tools | |
| Jumper Cables | |
 |
Glow Plugs |
| Test Equipment | |
| Glow Plug Tools | |
| Jumper Cables | |
 |
Glow Plugs |
| Test Equipment | |
| Glow Plug Tools | |
| Jumper Cables | |
Thank you for your support.
Other Glow Plug Videos:
- Diesel Won’t Start when the Engines Cold – White Exhaust Smoke:
- How to Remove and… Where are they Fitted?:
How to Test Glow Plugs:
- With a Test Meter – The Complete Guide:
- Without a Test Meter – The Complete Guide:
- Without a Test Meter – (short version):
- Still Fitted in the Vehicle (Resistance):
- Removed from the Vehicle (Resistance):
- The Supply Voltage & Timer (Voltage):
- Measure the Continuity:
More Detailed Info:
More detailed information can be found on this page: Diesel Won’t Start When Cold – How to Fix Glow Plugs: (Opens in a new window / tab)
