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When and How to Diagnose Diesel Fuel Injector Issues. Unlike your timing chain or fuel filter, your diesel fuel injectors don't come with an expected lifespan from the factory. Instead, since different fuel injectors on different trucks experience different operating conditions, diesel fuel injectors typically come with a recommended inspection ...
- Overview
- Using Diesel Fuel Additives
- Connecting a Fuel Injection Cleaning Kit
If you see dark grey clouds coming from your exhaust pipes, or if you notice that your diesel engine is stuttering or struggling to accelerate, you may need to do some maintenance on your fuel injectors. Clean, well-functioning fuel injectors are key to getting the most efficient performance and mileage from your diesel engine. For minor clogs and ...
Purchase a diesel fuel additive that is compatible with your engine.
Diesel fuel additives are cheap, easy to use, and will keep your engine cleaner. They can help your engine burn fuel more efficiently and prevent buildup around the injectors. You can often notice a difference in your diesel engine’s performance immediately after using a fuel additive.
Check the packaging to be sure the fuel additive you purchase is meant for diesel fuel and is compatible with your engine.
If the additive doesn’t indicate that it’s for diesel engines, check the packaging to see if your engine type or vehicle model is listed.
A few popular fuel additives that will keep your injectors clean are Stanadyne Performance Formula One Shot and Lucas Fuel Treatment. Both can be found at your local auto parts store or online.
Make sure the engine is turned off and the fuel tank is almost empty.
Use a fuel injection cleaning kit to clear clogged fuel injectors.
If your engine is stuttering, or if you see dark clouds of smoke coming from your exhaust pipes, your fuel injectors may have some serious clogs. If this is the case, it's best to use a cleaning kit to remove built-up residue. Fuel injector cleaning kits are relatively cheap and easy to use, and will effectively clean stubborn clogs out of your fuel injectors.
Make sure the kit is compatible with your engine by checking the packaging or looking online before you purchase.
Check the kit’s details to see if your engine type or vehicle model is listed as a compatible engine it can be used on.
You may need to purchase additional connectors or adapters, so make sure you have all the necessary parts that you need.
Make sure the engine is off before you work.
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- Poor Engine Performance. One of the first signs of clogged diesel fuel injectors is diminished engine performance. This can present itself in different ways: difficulty starting your vehicle, rough idling, lack of power when accelerating, or even stalling.
- Decreased Fuel Economy. Another strong indicator that your diesel fuel injectors may be clogged is a sudden decrease in your vehicle’s fuel economy. When injectors are clogged, they can’t meter fuel accurately, causing your engine to burn more fuel than necessary.
- Increased Emissions and Exhaust Smoke. One of the more obvious signs that your diesel fuel injectors are clogged is one that you can see and smell without much issue.
- Check Engine Light. A clogged diesel fuel injector can cause your check engine light to come on. The vehicle’s computer system monitors your fuel system, and if the injector isn’t delivering the right amount of fuel, it will trigger the check engine light.
Nov 6, 2023 · Black Smoke. Excessive black smoke emanating from the exhaust is a telltale sign of diesel injector issues. This occurs when an injector is stuck open or partially clogged, causing it to release an excess of fuel into the combustion chamber. The unburned fuel then exits the exhaust in the form of thick, black smoke.
Mar 4, 2021 · One of the best ways to clean fuel injectors is to add an injector cleaner to the fuel system for a good cleaning. After making sure you purchase a fuel cleaner designed for your type of diesel engine, follow these steps: Warm up the engine for a few minutes. Turn off the engine and remove the fuel filter. Fill the filter and housing with the ...
9. Engine Sputtering: Engine sputtering is another symptom of bad diesel injectors. When the injector is not working properly, it can cause the engine to run lean, which means that there’s not enough fuel being injected into the engine. This can lead to a loss of power and decreased fuel efficiency.
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Cleaning a Clogged Diesel Fuel Injector. Knowing the symptoms of the complicated dance that goes on in your fuel injection system. Makes it easy to see how bad, clogged, or dirty fuel injectors can throw a wrench in your diesel engine! These are a few ways that will help with unclogging your diesel fuel injectors: 1. Using Diesel Fuel Additives
