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 Tell if a Car Spark Plug is Malfunctioning?

Model: (Various brands) Various
Part: Spark plugs

Video tutorial

Today, with the help of this video, you will learn how to tell if a spark plug in your engine is malfunctioning. As we know, when we feel vibrations and strange noises from the vehicle, it means one of the spark plugs is not working correctly, but which one of the four do we have? To determine which spark plug is malfunctioning, you need to unscrew the bolts and lift each spark plug one at a time while the engine is running.

If lifting a spark plug does not change the engine noise, that is the one to replace; otherwise, the noise will change.


Updated on 13 October 2026 by ScegliAuto


Related tutorials

What to Do When the Dashboard Displays 'Preheat Malfunction'. Which Glow Plug to Replace.
What to Do When the Dashboard Displays 'Preheat Malfunction'. Which Glow Plug to Replace.
(Various brands) Various Learn how to identify which glow plug to replace when the dashboard displays 'Preheat Malfunction'. First, disconnect the battery, then remove the co…
How Spark Plug Wires are Made and How They Work
How Spark Plug Wires are Made and How They Work
(Various brands) Various In this tutorial, we will see how spark plug wires are made and how they function in cars. Typically, there are four spark plug wires, one for each s…
The operation of the glow plug control device.
The operation of the glow plug control device.
(Various brands) Various In this tutorial video, see how the glow plug control device works: the pre-heating system with glow plugs is equipped with a control device and cons…

How to Remove the Rear Seat of a Hyundai Tucson?

To remove the rear seat of a Hyundai Tucson, follow these steps. Start by moving the front seats to their most forward position to gain space. Next, locate the release lever on the underside of the rear seat, near the floor. Press this lever down while pulling the seat upwards to unlock it from the anchor pins. Once unlocked, tilt the seat upwards and forwards to remove it from its position. Repeat this process for both sides of the rear seat. Be careful of any electrical cables or components that may be connected to the seat during removal. Once the rear seat is removed, the disassembly is complete.

Watch the video!


by ScegliAuto

More videos