How to Test Glow Plugs – Measure the Continuity (Video)

How to Measure the Glow Plug Continuity (a quick test to see if the circuit is open or closed).

How to Perform a Glow Plug Continuity Test:

If your test meter can’t read low resistance (1 to 6 ohms), or you don’t have a multimeter? Do a continuity check.

A continuity check will test if there is an open circuit (check if the glow plug is broken internally). You can check continuity with a cheap & simple ‘buzzer’ or ‘light probe’ tester. If you don’t get a ‘buzz’, or a glow from the light, (the glow plug is open circuit) and is defective!

It’s very easy to check, even if you don’t have a test meter (multimeter). To get the best results, remove the glow plug before testing.


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
United Kingdom UK   Glow Plugs
Test Equipment
Glow Plug Tools
Jumper Cables
United States USA Glow Plugs
Test Equipment
Glow Plug Tools
Jumper Cables
Australia AUS Glow Plugs
Test Equipment
Glow Plug Tools
Jumper Cables
Canada CAN Glow Plugs
Test Equipment
Glow Plug Tools
Jumper Cables
Ireland IRL Glow Plugs
Test Equipment
Glow Plug Tools
Jumper Cables
Disclosure: The links in this table are “affiliate links” This means we may garner a small commission (at no cost to you), if you choose to make a purchase.
Thank you for your support.

Other Glow Plug Videos:

How to Test Glow Plugs:

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)