How to Clean Fuel Injectors?
3 Answers
First, find a suitable screw, screw it in tightly, then pull it out while gently wiggling it left and right. If the screw feels loose, continue tightening it. Use a cloth and paper towels to thoroughly wipe the surface first to prevent large debris from falling inside. Then, use paper towels to clean the interior. Finally, use carburetor cleaner to clean the inside. Even if the fuel injector is slightly clogged, impurities can be flushed away and dissolved during high-gear acceleration. Disconnect the car's fuel pump power supply. For some models, you can remove the fuel pump relay to avoid gasoline spraying from the connections during the cleaning process.
Cleaning fuel injectors isn't as complicated as many people think, and I often do the maintenance myself. The most common method is to buy a bottle of fuel system cleaner, add it to the fuel tank, fill up with gas, and then drive on the highway to let the engine run at high RPMs. This allows the cleaner to flush out carbon deposits from the injectors. If you find this troublesome, you can try removing the injectors and spraying them with a specialized cleaning agent, then wiping them down—though this process is a bit technical and requires tools. Never forget safety first: turn off the car and disconnect the battery before starting. After each cleaning, the car feels much smoother, and fuel consumption drops. I recommend doing this every 20,000 kilometers, and using high-quality gasoline can also help prevent clogging. In the end, DIY saves money and gives a sense of achievement, but be careful not to damage the electrical circuits.
As someone who has worked in an auto repair shop, I recommend leaving fuel injector cleaning to the professionals. We achieve the best results using ultrasonic cleaning machines: removing the injectors, placing them in the machine to eliminate stubborn carbon deposits with high-frequency vibrations, and then testing if the injection pressure is normal. For simple at-home maintenance, fuel additives can be used, but their effectiveness is limited. Clogged fuel injectors often cause engine shaking and sluggish acceleration, making it crucial to read fault codes with a diagnostic tool during inspection. For prevention, maintaining a clean fuel system is essential, such as regularly replacing air and fuel filters. If cleaning is delayed, it could damage sensors, leading to higher repair costs. In conclusion, while professional cleaning may be more expensive, it ensures engine longevity. I recommend a check-up every 30,000 kilometers.
