Poor fuel quality —The main reason your fuel injectors become clogged and unable to do their job is the quality of your fuel. If your fuel has too much excess debris or impurities, those by-products can get into your fuel injectors, making it harder for them to work.
The injectors are clogged by carbon deposits created when gasoline burns. The injectors can be clogged in their open position or stuck shut.
The fuel filter catches the majority of impurities but a small amount may make it past the filter. If there is water in the fuel system, corrosion can happen within the lines and fittings of the fuel system. This corrosion can cause debris to be jammed in the injectors.
The injectors' nozzles become eventually clogged or blocked because of hardened deposits. Leaks can also happen and cause trouble. The O-ring is where the fuel rail meets the injectors and this part can get brittle because of the high heat from the engine.
Common causes of injector failure
While many things can cause breakdowns, the most likely cause of premature failure is fuel contamination. Fuel contamination occurs when debris in the fuel gets past the filtration, destroying the sealing surfaces.
There is also another way fuel injectors can become clogged. If grit or contaminated fuel gets past the main fuel filter it can plug the small mesh filter in the top of the injector. Once an injector filter basket becomes clogged, usually it is too late for intake or fuel rail injector cleaner to resolve the problem.
Age and condition – if the injectors are old or worn out, a clean may not be enough to restore performance and could do more damage. Severe clogging may mean they need to be replaced anyway. Costs – cleaning fuel injectors is cheaper than replacing them.
What does it sound like when you have a bad fuel injector? If you happen to hear a rough idling voice, then it is a sign that the fuel injector is bad and it is not delivering the necessary fuel to the engine.
While there are a few reasons air-fuel mixture may be rich, clogged fuel injectors often cause lean mixtures. To remove carbon and other types of buildup from your vehicle's fuel injectors, you must use a high-quality injector cleaner. There are hundreds of cleaners on the market today.
If you do have a bad fuel injector the most likely symptom you will notice is a rough idle and an engine code for a misfire. A fuel injector is simply a electronic valve that opens and closes at the demands of your engine's fuel management computer.
With the proper fuel injector cleaning equipment and chemicals it takes the professionals about 45 – 60 minutes of actual cleaning time to clean a single or set of fuel injectors. During this time the injectors are opened and closed 20 000 to 30 000 time whilst they are inside an ultrasonic bath.
"Fuel injectors have an atomizing nozzle that distributes fuel evenly for optimal combustion and efficiency." Now, a vehicle will typically have one fuel injector per cylinder, with a lifespan of between 50,000 and 100,000 miles, or about 80,000 and 160,000 kilometers.
According to Angie's List, the average cost of a fuel injector cleaning ranges between $50 and $80. However, these figures could be a bit higher, depending on the make and model of your vehicle. In addition, you may be assessed a fee of around $50 if your fuel filter needs to be replaced.
Most popular Injector cleaning methods:
Injector / Injection Cleaner (Pour into fuel tank) Rail Induced Injector Cleaner (Used by repair shops and most dealers) DIY Injector Cleaning. Ultrasonic Fuel Injector Cleaning.
Replacement Schedule for Fuel Injectors
The Injectors ought to be replaced every 50-100,000 miles, in normal conditions. That is according to some published studies, but the true replacement interval may be very different, based on several factors.
The diesel engine's central computer or Engine Control Unit (ECU) controls the fuel injector's functions using sensors. When the ECU senses the engine's need for fuel, it relays the information to the injector. Debris from the fuel or fuel system can clog the injector.
Yes of course you can, if you intend to store your car or motorcycle up for the winter you should drain all the fuel from the petrol tank and drain out the Carbs also, then spray some WD40 with the thin red pipe into the carburettor drain plug hole for 3 seconds, I use to do this with my Suzuki Bandit and it didn't do ...
An abrupt loss of engine power is a somewhat obvious sign of a fuel injector failure. If the fuel injector is clogged, the fuel supply will be irregular too. When the fuel level fluctuates drastically, the high and low rpm's will cause the engine to move in surges rather than slow and gradual movements.
If you have one or more faulty fuel injectors — due to wear or mechanical or electrical issues, driving for a long time can cause several problems: Stalling or failure for your car to start. Flooding of your engine. Pre-ignition of your fuel.
A common fault is from contamination or by general wear and tear, as the nozzle can become blocked with carbon or foreign matter. This is a common problem if alternative fuel has been used. Once the diesel injectors nozzle becomes blocked no fuel passes through to the combustion chamber within the engine.
Although fuel injectors are individual, they are designed to work as part of a team with the other injectors. So, if you're wondering if you can replace just one injector or all, the answer is almost always to replace them all. Typically, the labor to replace one or all of them is the same.