Know Your Engine – Guidelines on Testing Your Diesel Injectors

It’s a common myth that problems in a diesel engine are easy to diagnose. This might have been true once, but diesel engine technology has come a long way in terms of complexity and sophistication.

Sure, there are still some common repairs that are easy to perform on certain engines, but that doesn’t mean all the issues are simple. Take diesel injector issues for instance. Diesel injectors are situated right in the bottom of the engine. Like any other component, they are bound to wear out and weaken over time.

Regarding your diesel engines performance, we advise you don’t take any risks. It is always best to leave it to the professionals when it comes to diesel injector or fuel pump issues. Because injectors have an obscure position in the engine bay, most people don’t realise there is a problem until it’s too late.  Therefore, it is important to regularly check your diesel injectors for function and condition. Here are some guidelines on how to test fuel injectors.

Step 1 – Have the Right Tools

Testing diesel injectors does not require too many tools. You will need a long screwdriver or rod and an automotive testing light. These can generally be found in your common home tool kit. Remember to have the correct safety gear like gloves and eye protection.

Step 2 – Check If Your Injectors Are “Clicking”

Functioning injectors make a ‘clicking’ sound when they activate. To test for the clicking noise, start the engine and place your screw driver/rod on the injector. Use your senses to feel the vibrations coming up the screw driver and look for the aforementioned clicking sound coming from the injector. If you can hear clicking from your injectors, it means they are activated.

Step 3 – Checking the Electrics

Most modern diesel engines have an electronic injection system. To check if the electrical connection is functioning, first, turn on the switch of your car so your battery is activated. You don’t need to turn on the engine.

Connect your test light to the negative terminal on the battery and touch the other point of the light to the small bit of exposed wire on the injector. If the system is working, the testing light should light up upon touching the injector wire.

Step 4 – Form a Diagnosis

Once you find out whether all your injectors are working or not, you can decide if you need replacement or repair for your injectors. If you are looking for high quality injectors, we offer an extensive catalogue.

Emerald Diesel provides quality solutions for all your diesel engine problems.