Is your Engine’s fuel economy degrading ?? Smoke coming out of Tailpipe ?? Shop Top quality fuel injectors at Partsavatar Canada.

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Fuel injection is the most common way which the modern internal combustion engines use to deliver the fuel. Almost every auto vehicle is equipped with fuel injectors.  Car Fuel injector is a pivotal component of vehicle’s fuel system as it helps to spray the fuel into engine with the help of injector nozzle.

Any problems with fuel injectors can cause malfunctioning of engine and its components. Under worst condition it may stall your car. For a better fuel economy and optimal performance of vehicle’s engine it is very important for the fuel injectors to work properly.

What is a Fuel Injector?

Fuel injector sounds to be quite a complex terminology but it isn’t. They are the components that are responsible for the final stage of fuel delivery in fuel injection systems. Fuel injectors are mostly controlled by car’s ECU and fuel injectors are activated by this ECU or auto fuel injector module when the high pressure fuel is passed to the injector. 

There are few types of fuel injectors. They all differ in design while the working is still the same. Let’s have a look at main 3 types of fuel injectors in detail.

1. Built into car's Throttle body/ throttle body injectors

2. Centrally located/ central port injection

3. Located at each cylinder/ multiport injection

Throttle body injection

In throttle body injection system, the fuel injector is built right into the throttle body. This simplest single point fuel injection system consists of a single injector that slot into the throttle body.

Throttle body injector is similar to other standard fuel injectors but it is responsible for delivering the fuel to entire engine rather than just one cylinder.  When it is activated, it sprays a mist of fuel into the throat of throttle body where it mixes with air and passes to the intake manifold.

This air fuel mixture plays vital role in engine’s internal combustion process.

You can simply replace old or worn throttle bodies with new throttle bodies by simply unbolting the injector.

Central Port Injectors

Unlike throttle bodies, in central port injectors a single maxi injector is used to provide the fuel to all cylinders. It is sometimes termed as hybrid port injectors as its central injector is connected to each intake port via nylon fuel lines.

Major components of central port injectors are:

1. Poppet Valve Nozzle

2. Nylon fuel lines

3. Fuel pressure regulator of car

It has one drawback. As the injectors work as a single unit, so if any component fails, the entire unit will have to be replaced instead of the single component.

Multiport Fuel injectors/Direct Port Injectors

Most of the diesel and gasoline engines today use multiport or direct fuel injectors which both use similar fuel injectors. These injectors are responsible to deliver fuel to single cylinder. The major difference between auto multiport injectors and direct injectors is that the multiport injectors deliver fuel to the intake at each intake port and direct fuel injectors spray the fuel into each combustion chamber of the engine.

How does a Fuel Injector work?

Fuel injectors can be further differentiated into Poppet valve Fuel injectors and Pintle valve fuel injectors.

Fuel injectors that operate using pintle valve use solenoids to function. The ECU activates the solenoid which causes it to undergo linear movement and this linear motion causes the pintle to move away from its position. A mist of highly pressured fuel then begins to spray from the pintle nozzle.

But in case of fuel injectors that operate using poppet valves, fuel pressure is used instead of solenoid. The maxi injector receives constant amount of pressurized fuel which is delivers to each cylinder with the help of nylon lines. After reaching sufficient level of pressure, the poppets are forced to open which results in fine mist spraying into intake port. When the pressure decreases, the valve poppet valve closes again.

When to replace Fuel Injectors?

When a fuel injector begins to fail due to contamination, it typically needs to be replaced. Let us look at some common symptoms to look for when you need fuel injector replacement.

Restrictions in the fuel injectors

A restriction of 8% to 10 % in a single fuel injector can lean out the fuel mixture and will eventually cause an engine misfire. Direct fuel injectors are prone to restrictions as the precise amount of fuel is injected into combustion chamber.

Increase or Decrease in long and short term fuel trims

If a fuel injector becomes too clogged with fuel varnish deposits and fails to deliver its normal dose of fuel the PCM may not be able to increase the injector. Sometimes fuel pressure can also be affected by weak fuel pump or leaky fuel pressure regulator.

This phenomenon will eventually result in a lean air fuel mixture and will ultimately cause misfire.

Engine Misfire and decrease in fuel economy

It is one of the most common symptoms of a failing fuel injector. You will start noticing performance issues with engine whenever the fuel injector starts malfunctioning.

Performance problems often arise if the air fuel mixture is tampered due to bad fuel injector. You will notice certain symptoms like car's engine misfiring, loss in power, decreasing fuel economy and stalled engine in worst case.

Vehicle won’t start with full tank

Fuel contamination also results in failing fuel injectors. Symptoms of contaminated fuel can include hard starting, stalling, loss of power and poor fuel economy. The symptoms of fuel contamination appear immediately after refueling. In this case, you will also notice the fuel gauge needle pegged on full which is not a good sign.

Check Engine light appears

A lean mixture may trigger misfire code and turn on the check engine light. There are various symptoms of check engine light’s appearance on dash. Call your technician to decipher the misfire code and determine exact cause for the appearance of check engine light.

There may be clogged fuel injectors or electrical issues with the computer that are triggering the check engine light to alert you. At this moment, it is best to get your computer scanned by the technician for trouble codes.

Strong fuel smell

As the fuel injectors hold very high pressure while delivering fuel to chambers, this high pressure could cause them to develop leaks at the nozzle. A leaky fuel injector will pass fuel into the chamber while leaky seal will leak fuel at the base of injector. It will produce a strong fuel smell. Smells are not good for engine’s health.

So as soon as you notice fuel smell get your car checked by a professional.

Neglected maintenance may also lead to failing fuel injector. Contaminated fuel, not changing oil, damaging PCV system can damage fuel injector as well as fuel pump camshaft lobe.

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Have you ever wondered just how your car is powered ?? PartsAvatar outlines the importance of Combustion chamber and how it effects engine performance!

Read about Engine Combustion chambers in detail and Factors affecting the performance of chambers here- Partsavatar.ca Vehicle Parts!

Have you ever thought just how the fuel is burnt inside the car? Many of us will make a rough guess that it’s the job of an engine. It is. But who is performing this job inside the engine exactly?

We need fuel to run our cars. To burn that fuel and to produce energy some space is required. That’s where the concept of combustion chamber dives in.

Combustion chamber is an enclosed part of internal combustion engine in which air- fuel mixture is burnt. In short, combustion chamber is that area where air fuel mixture is ignited.

 It is generally formed on the one side by the shape cast into the cylinder head and on the other side by the top of the car engine's piston . When the piston is at the top dead center and the chamber is at its smallest dimension then this is the most vulnerable and unstable condition for air fuel mixture and then it is ready for ignition process. The combustion process increases the internal energy of the gas, thus increasing the temperature and volume of that gas. In the confined place, the volume is controlled and the pressure is produced. This pressure helps in moving piston on a crankshaft through automotive engine’s crankshaft pulley.

Combustion chambers work as the lungs for the engine. The better the combustion chamber design is the better the engine breathes. Combustion chamber design plays a pivotal role in the performance of Car’s Engine.  Car’s engine performance depends upon Shape of the top of the piston, shape of the chamber, location of valves and spark plugs and overall airflow through exhaust and intakes.

Now let’s have a look at widely used combustion chambers in modern cars.

Internal Combustion Engines

Internal combustion engine is a heat engine in which the combustion of air-fuel mixture takes place in an enclosed space which then produces energy and pressure to move piston, rotors and turbine blades. They basically use air as the oxidizing agent.

Different types of combustion chambers are found in the internal combustion engines. 

Cars and Motorized boats work on the Piston engine mechanism. In the combustion chamber, the energy created by burning air fuel mixture helps in sliding the piston tightly within the cylinder. In these engines, the location of combustion chambers may vary. The chamber may be located in the cylinder head or on the top of piston. For example a V6 engine with cylinders and pistons is commonly used in front wheel drive cars.

As compared to cars the jets and other gas turbines use combustors where the air is pulled in and compressed through the compressor.

Factors affecting the working of Combustion chambers

We can readily detect the problems with spark plugs and engine misfire of car if we know what exactly is happening inside the combustion chamber.

Internal combustion engine is advancing day by day towards the route of perfection. The revolution in the engine world was made by moving fuel injector port into the cylinder and making combustion process more precise. Automakers are aspired to make the engines with compression ratio 12:1 with low emission elements like pump gas and cast pistons.

Spark Plugs

Spark plug is a vital component of car’s ignition system. It delivers the electric current produced by car’s ignition system parts to the combustion chamber to ignite air fuel mixture by electric spark. It also acts as a heat exchanger as it pulls unwanted thermal energy from the combustion chamber and transfers heat to engine’s cooling system.

They play a vital role in igniting the fuel. In modern cars, the area where the spark is created is much smaller while the plug gaps are same as that of old engines. But today’s spark plugs have increased its complexity.

Ford 5.4 Triton V8 users often complain about the spark plugs as they are long and narrow and at the same time very difficult to remove. They are placed near the exhaust and intake valves. So, if the spark plugs wear out by time, ford users need to pay for extra labor cost to remove the complex parts before getting to the spark plugs. In the spark induced internal combustion engines, just forget to drive if the spark plugs are not working.

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EGR Systems

Exhaust gas recirculation or EGR of car is an effective mechanism to control NOx emissions from diesel engines. The EGR reduces the level of NOx gases by lowering the oxygen concentration in the combustion chambers and by heat absorption. EGRs are popular in Gasoline engines to increase the engine efficiency and reduce the pumping work.

EGR systems put a small amount of inert gas into the combustion chamber to control the temperatures. They reduce the NOx emission by lowering the combustion temperature as the exhaust gases do not get burnt.

The temperature in the combustion chamber due to various reactions and mixing may rise up to 2500°F. In high temperature, the oxygen and nitrogen start combining to form harmful gases like NOx and CO.

Advanced vehicles with variable valve timing on both exhaust and intake cam shafts can adjust the timing so that small amount of exhaust gas is sucked into the chamber during intake stroke.

A properly working EGR system is very important to prevent the formation of harmful oxides in the chamber due to increased temperature. It affects both exhaust system parts as well as the performance of the engine.

Buy Car’s EGR system components and Auto Exhaust system parts at lucrative prices from Partsavatar.ca replacement auto parts.

Catalytic Converter

Catalytic converter is one of the most expensive parts of the car and heavily prone to theft due to its design. It contains catalyst that fastens the conversion of unburned hydrocarbons, nitric oxides and carbon monoxides into less harmful gases like carbon dioxide, nitrogen and steam/water. The reactions inside the combustion chambers directly affect the working of a catalytic converter.

Anything that gets through the combustion chamber and reaches the face of the converter can reduce its efficiency.

If the emission system sensors fail to detect the formation of gases and substances inside the chamber, you are just inviting a huge replacement bill.

Install sensors and keep record of the emissions of the car exhaust tailpipe. Make sure there is no leak in the engine that is causing the leakage of coolant or other liquid into the chamber as the liquid will automatically flow from chamber to the converter and hence the ultimate destruction of the catalytic converter will take place. Mind you, replacement of a normal Catalytic converter may start from $2000.

For good engine performance and combustion chambers, better keep the catalytic converter in good condition. Buy top quality cars' direct fit catalyticconverter parts at cheap prices from parts avatar Canada.

Bottom-line

To achieve a robust combustion event out of a combustion chamber, pay attention to the upper mentioned factors. Exhaust gases especially the harmful ones are not good for engine’s health. With the technologies, ensure the correct amount of air-fuel mixture is being burnt in the chamber and optimal engine performance is being achieved.

Parts avatar is always ready to help and assist their customers. But Aftermarket Auto parts from partsavatar.ca car parts and get the benefit of free shipping for amount spent over $99.