Do it yourself
Frequently asked questions about cars and motorcycles

How to Clean Injectors with WD-40

Model: (Various brands) Various
Part: Fuel injectors

In this video, see how to clean injectors with WD-40, and the procedure is the same for any type of propulsion: petrol, diesel, methane, or LPG. For this operation, you will need a battery charger, preferably with a power button, and a small container to immerse the injector in WD-40. You will also need a cable with two fastons, while the other two ends connect to the positive and negative terminals. Spray a good amount of WD-40 into the container and proceed. You will see that the liquid gradually darkens, and residues are left deposited. Compare it with a throttle body cleaner, which remains relatively clean. Make a final comparison with a nitro thinner: here, no residues of any kind remain. The result of the comparison is that WD-40 is perfectly recommended for this operation and is suitable for all types of propulsion.

Updated on 29 July 2026 by ScegliAuto

Video tutorial

Related tutorials

(Various brands) Various If the windscreen washer nozzle on your car is blocked, the best way to clean it is not to poke it with a pin, as this can not only fail to clean it …
(Various brands) Various Removing diesel engine injectors is not always advisable. It is a delicate job. However, if it is absolutely necessary, here is a simple method to do…
(Various brands) Various To remove stuck injectors from a diesel engine, a pneumatic extractor is unfortunately required. Removing them by hand if they are stuck is not easy.…

Other guides you may be interested in

How to Open the Bonnet of a Renault Megane if the Lever is Broken?

If the lever that unlocks the bonnet of the Renault Megane is broken or not functioning, there is an emergency procedure to unlock the mechanism: remove the right front grille located at the top of the bumper. Once the grille is removed, you can locate the actuator mechanism: by pulling the spring in this position, you can unlock the actuator, allowing you to lift the bonnet and access the components located inside the engine compartment. You can then close the bonnet simply by lowering it.

Watch the video!


by ScegliAuto

More videos