Top 5 signs of a bad fuel injector – car talk – nigeria gas konigsforst


Fuel injectors when fail can lead to a bunch of problems that can affect the engine performance. Nobody would love to come across such a snag, especially for those who have experienced the hefty repair charges from their local mechanics. There’s no substitute for replacement if the fuel injector is really bad. However, you can save other parts of the engine from getting damaged, if you manage well enough to look for the striking signs, which point towards a failing fuel injector. Here’s a list of the 5 most known signs that indicate a bad fuel injector.

It is easy to understand that when a fuel injector is clogged, the fuel supply will be irregular too. With such lopsided flow, the engine will fluctuate between low and high rpm’s causing it to deliver the power in chunks, rather than being smooth and gradual.

In case when the injector keeps on struggling against the clogging of foreign particles, a time may come when it might miss out to supply the fuel completely when it is required to. Thus, the engine results to give a compromising performance. The engine will misfire which can be felt easily while driving. This is really a bad sign and requires immediate response because misfire would give rise to engine overheating and pre-igniting the fuel mixture.

Apart from those internal chokes, fuel injectors can turn out to be bad even due to external cracks developed on the exterior body part of the injector. This damage is common for those injectors fitted on to the intake manifold. These cracks can cause the fuel to leak from the body, rather than flowing through the nozzle, which can be seen and smelled easily. The leaking fuel, instead of being sprayed in atomized form, flows in the manifold in the form of droplets. This will cause the air fuel mixture to turn out

It is obvious, that a damaged fuel injector would either cause the fuel to be wasted by leaking from the body or would supply excessive fuel when the internal springs are damaged. These conditions will undoubtedly lead the car engine to run poor reducing the gas mileage.

Watch out for these most common signs in your car if you are suspecting the fuel injector to be faulty. Responding to these problems early can save a great amount of time and money and can also avoid damaging to other parts. Pay attention today itself and keep yourself away from paying extra for your auto repairs.

Step 5 – An air intake boot is designed to transfer air from the mass air flow sensor to the throttle bore. The PCM monitors this air flow and corrects fuel injector signal input. When an air intake boot fails it causes the PCM to respond by inputting more fuel than is necessary. Visit – Air intake boot replacement

When a tune up is performed the spark plug insulator can inform on a lean or rich mixture. Brownish grey is the desired color and confirms proper mixture while black and sooty means the mixture is too rich and white to light grey confirms a lean mixture. Fuel injection systems rely on pressurized fuel to operate. Visit – Replace spark plugs

Black smoke is caused when the mix of fuel and air inside the engine becomes un-balanced. Normal mixture is 14.5 parts air to1 part fuel. When the fuel to air mixtures change because of a malfunction the mixture can go as high as 14.5 to 2 or 3, two to three times the proper amount. The black smoke seen from the tail pipe is the excess fuel generated from the rich mixture. Malfunctions in fuel delivery or a leaking fuel pressure regulator will cause black smoke to be produced. The fuel injection system atomizes fuel by pushing it through a small nozzle of the fuel injector while under pressure. The computer system measures vacuum and air flow into the engine intake manifold to determine a proper amount of fuel that should be released. Airflow is controlled by the throttle body or throttle valve actuator (throttle) as fuel is distributed directly in each cylinder. The process of measuring the amount of fuel a fuel injector is dispersing is determined by the PCM (powertrain control module – computer).

Clean fuel injectors are a must for peak engine performance, fuel economy and emissions. If the injectors are dirty and can’t deliver their normal dose of fuel, then performance, fuel economy and emissions are all going to suffer. Dirty fuel injectors can’t flow as much fuel as clean ones, and they can’t they delivery the correct spray pattern that is so essential for clean, efficient combustion and the horsepower desired. The fuel feedback control system will compensate for the leaning effect once it is in closed loop, but it can’t correct the underlying condition that is causing the problem.

Troubleshooting can lead you to the fuel injectors needing to be cleaned, if an engine is experiencing any of the classic symptoms of dirty injectors, such as lean misfire, rough idle, hesitation and stumbling on light acceleration, a loss of power, and higher hydrocarbon (HC) and carbon monoxide (CO) emissions. Lean misfires can cause newer systems (OBDII) to read a misfire code or multiple codes depending on the effected injector(s).

What are the Bennefits of cleaning and balancing your injectors? Its obviously will depend on the condition of the injectors prior to the cleaning. Older more "clogged" injectors will notice a much larger improvement over injectors that are less accumulation of deposits. No matter the starting condition of the injectors, an increase in performance and fuel economy will pay for the cleaning in a matter of no time. Most high-mileage engines and engines that are used mostly for short trip stop-and-go driving are the most likely prospects for injector cleaning. High performance applications are even more important to maintain and keep in balance. We recommend cleaning the injectors every 25,000 to 30,000 miles to keep them flowing at peak efficiency.