Do it yourself
Frequently asked questions about cars and motorcycles
Car tutorial (Do it yourself) Motorcycle tutorial (Do it yourself) Frequently Asked Questions

How to Test a Glow Plug?

Model: (Various brands) Various
Part: Glow plugs

Video tutorial

As shown in this tutorial, testing the proper functioning of a glow plug is very simple. You will only need any model of tester.

First, locate the glow plug to be tested, then disconnect the power cable to expose the pin that acts as a contact. Next, set the tester to the lowest resistance value available, connect the negative to any engine ground, and connect the positive to the glow plug pin. If a very low resistance value appears on the tester, such as 3 ohms in this case, the glow plug is functioning perfectly.


Updated on 14 May 2026 by ScegliAuto


Related tutorials

How do you test a glow plug
How do you test a glow plug
(Various brands) Various In this video, the youtuber teaches us a way to test a glow plug, which is nothing more than a resistor; the terminal part becomes incandescent, in o…
How to Remove a Broken Glow Plug from its Seat
How to Remove a Broken Glow Plug from its Seat
(Various brands) Various This guide shows how to remove a broken glow plug from its seat in the engine. To perform this operation, a specific kit is required. First, remove t…
How to Extract a Broken Glow Plug
How to Extract a Broken Glow Plug
(Various brands) Various It can happen that during the removal of a glow plug, the hexagonal element may break off from the body of the glow plug, which then becomes stuck in…

How to Remove the Toll Tag Holder from the Car Windscreen

The toll tag holder is usually attached to the car windscreen to ensure that the toll tag functions immediately when passing through barriers. However, if you decide to remove the holder, you should follow this procedure: - Insert the toll tag into the holder; - Pull the holder inwards to detach it from the windscreen; you can use a glass scraper or a stiff plastic card to assist you; After removing the holder, it is essential to remove the adhesive from the windscreen. To remove the adhesive, we recommend using a solvent-based spray that will remove the glue without clouding the area.

Watch the video!


by ScegliAuto

More videos