Been wanting to increase your vehicle's gas performance? Why not get fuel injectors? Allowing your vehicle to get topnotch gas mileage and develop additional horsepower and cleaner emissions, fuel injectors are considered standard equipment on hundreds of vehicles. If you're planning to change your engine with high-flow intake and exhaust components, getting fuel injectors is the first step to it.
Constant supply of gasoline is the sole requirement of fuel injectors. When that is settled, fuel injectors ensure power and performance as these are specifically engineered to maximize such. High performance is met through quality inner parts made with utmost precision for good flow of fuel.
Some fuel injectors are specially made for use on the racetrack. These fuel injectors can have a flow rate of around 250ccs to 260ccs per minute and offer increase in horsepower. Some fuel injectors feature recessed spray holes that prevent clogs and hence avoid the need for cleaning. Sometimes cars are initially equipped with fuel injectors that are more economical than performance-enhancing. After-market fuel injectors can infuse more power to these cars as these fuel injectors give bigger shots of fuel.
Keeping your car's much needed fuel flowing with smooth and fine fuel injectors ensure dependable performance throughout its lifespan. Plus, these are often sold in sets and are actually easy to install. Indeed, getting a fuel injector or gas injector for your car can only do you good.
Fuel Injector Buyer's Guide
- The fuel injector is a fuel delivery component that’s responsible for spraying gasoline or diesel into the combustion chambers.
- The number of fuel injectors depends on how many cylinders are in your engine.
- The injectors are controlled by the computer, which magnetizes the electromagnetic coil to open the valve. In contrast, the valve closes when the computer cuts the supply of electric ground and lets the metal spring to relax.
- The two main categories of fuel injectors are top-feed and side-feed.
- Top-feed fuel injectors are subdivided into three: regular, hose-end, and direct.
- Side-feed fuel injectors have two subcategories: throttle body injectors and manifold side-feed injectors
- In an ideal setting, a fuel injector should last anywhere between 50,000 and 100,000 miles.
- Fuel quality and fuel filter maintenance determine how long your fuel injectors are going to last.
- A fuel injector costs around $15 to $655.
What is a fuel injector?
The fuel injector is a fuel delivery component that’s responsible for spraying gasoline or diesel into the combustion chambers. It’s simply a special valve designed to receive and deliver fuel to the cylinders. It is electronically controlled to fully or partially open and close depending on the data collected by various sensors in your vehicle.
The number of fuel injectors depends on how many cylinders are in your engine. A six-cylinder engine or a V6 has six injectors assigned per cylinder. They are installed suspending from a slim bar called the fuel rail which runs along the top or side of your engine block.
How does the fuel injector work?
Fuel injectors are powered the moment you turn the ignition switch on. That, however, is an incomplete circuit so the small valves remain close. The circuit will only be completed if the computer sends signals in the form of an electrical ground that activates the electromagnetic coil. Once magnetized, the coil will pull the valve’s sealing mechanism, allowing the fuel to flow through the injector right after passing the fuel filter.
In contrast, the valve closes when the computer cuts the supply of electric ground and lets the metal spring relax. This return spring is what forces the sealing mechanism (either a pintle, a ball, or a disc) to shut and cut the fuel supply. This cycle of opening and closing the valve happens at an extremely fast rate or hundreds of times per minute.
Types of fuel injectors
Since there are different types of fuel injection systems, you’ll find a diverse selection of fuel injectors in the market. Below are the five different types of fuel injectors depending on the application.
The top-feed type usually has the fuel inlet provision on the top and uses a vertical fuel flow that runs from top-to-bottom. There are three subcategories of top-feed injectors: regular top-feed injectors, hose-end injectors, and direct fuel injectors.
Regular Top-feed Injectors
This is the type that uses a common fuel rail that mounts the top of the injectors. The connection is sealed either by an O-ring or an injector clip depending on the design. Meanwhile, another O-ring seals the connection between the intake manifold and the injector.
Hose-end injectors feature a rubber hose that connects it to the fuel rail. The hose is held in place by a clam an is directly inserted to the injector’s ferrule. This type of top-feed injector is commonly found on older vehicles. Hose-end injectors were deemed unreliable because the rubber hose has the tendency to become brittle and crack due to temperature changes.
Direct Fuel Injectors
Direct fuel injectors use a common fuel rail and heavy-duty O-rings that seal the point between the fuel rail and the injector. They inject highly atomized fuel into the combustion chambers under high pressure.
Direct injectors operate at pressures 450 to 3000 PSI. The typical pressure at which top and side-feed injectors operate ranges from 38 to 100 PSI.
Side-feed injectors are more compact than top-feed partly because they fit inside the fuel rail. The main difference between top-feed and side-feed injectors is that a side-feed fuel injector has the fuel entering from the holes at the side instead of on the top. Since it fits inside the fuel rail, the injector is submerged in fuel for the most part.
There are two subcategories of side-feed injectors: throttle body injectors and manifold side-feed injectors.
Throttle Body Injectors (TBI)
This type of injector is used in single-point injection systems. It is located in the same area where the carburetor used to sit. Depending on the size of the engine, manufacturers fit one or two of this, while aftermarket setups use up to four. This is rarely used nowadays as injectors are becoming closer and closer to the cylinders.
Manifold Side-feed Injectors
As the name implies, this type of side-feed injector is located in a common fuel rail that’s mounted on the intake manifold, close to the cylinder head. It features two O-rings that are found on the top and between the fuel rail and cylinder head.
When to replace your fuel injector
In an ideal setting, a fuel injector should last anywhere between 50,000 and 100,000 miles. This specification, however, is affected by the type of fuel you use and how regular you replace various fuel filters. Low-quality fuel can cause carbon deposits to accumulate and clog your fuel injectors. If this happens, you’ll experience problems like lean fuel mixture, troubles in turbocharging, and engine detonation or knocking.
Also, be cautious about externally leaking fuel injectors as they can light your car on fire.
Signs of a bad fuel injector
Faulty fuel injectors can damage your engine if the problems pile up. Make sure to deal with it as soon as you find out about it. To be able to do that, take note of the bad fuel injector symptoms you may encounter if your injectors are in bad shape.
- Ignition difficulties
- Wild engine vibration
- Degraded performance
- Poor or rough idling
- Knocking or spark plug detonation
- Poor fuel economy
- Failed emissions test
- Difficulties reaching high RPM
- Strong gasoline or diesel odor inside and around the car
- Oil thinning
- Thick smoke coming from the exhaust
How much is a fuel injector?
OE fuel injector replacements on CarParts.com consist of remanufactured and new assemblies from reputable brands. A fuel injector costs around $15 to $655. You can purchase individual pieces or a package of up to a set of eight. Filter your search by selecting your preferred OE replacement brand, series, or by simply indicating your vehicle’s year, make, and model.
Important Facts You Need to Know About Fuel Injector
Want to shed your skyrocketing gas bills? All you need is a first-rate fuel injector.
Money isn't easy to come by nowadays. This is why most of us do our best to budget and maximize the pay that we take home on a monthly basis. And if you happen to own a car, one of the things you try to control is your fuel consumption. Since your car will end up consuming fuel every time it's used, what can help you in conserving the use of fuel is a Fuel Injector.
A Fuel Injector is a valve that's found on your intake manifold. It's electronically controlled and allows pressurized fuel to be released into your engine's intake valves through the nozzle it's equipped with. This helps maximize your fuel usage since the nozzle atomizes fuel by releasing it in a fine mist. Also, the amount of fuel being released is based on the length of time the fuel injector replacement stays opened. This process is called the pulse width and is controlled by your vehicle's engine control unit or ECU. As a result, you're assured that no fuel goes to waste every time you use your vehicle.
By having fuel injectors control your vehicle's fuel consumption, you're able to limit the number of times you have to gas up your car. This allows you to save and use the money you initially allotted for fuel to get something else. So make it a point to have one installed so you can enjoy the benefits of having better fuel economy.
Fuel Injector: Just the Facts
With the soaring prices of performance parts nowadays, it can be hard to optimize your car to perform at its peak. But you don't have to settle for mediocre performance from your vehicle.There are cheap yet effective ways to improve your car's performance. One of them is to equip the engine with high-quality fuel lines.A fuel line is a hose that brings fuel from the tank to the pump, then from the pump to the carburetor or fuel injection nozzles. A premium fuel line ensures that fuel is quickly and efficiently delivered to the fuel injection system. In turn, this helps the engine maximize your vehicle's fuel supply.If you want to make sure that fuel gets to the engine, make sure your car's fuel lines are in good shape. Once the lines crack and develop leaks, all you have to do is visit CarParts.com. We have topnotch fuel lines waiting for you at our catalogs.
• Crafted only from durable materials to ensure leak prevention
• Come with the necessary connectors and fittings
• Designed according to OE specifications
How Do You Find the Right Fuel Injector?
A fuel injector injects and delivers fuel to your engine's combustion chambers for proper burning. This is a small, electronically controlled valve that forces fuel through a nozzle and sprays it evenly toward the pistons. An even spray pattern and the right air/fuel mixture is necessary for efficient combustion, so you need a good fuel injector to ensure the precise amount of gas is delivered to the engine at all times.
Types of fuel injectors
You need to know the different types of fuel injector available in the market before finding the right one for your car. The throttle-body injector is the most basic type, and it functions more like a computerized carburetor. Located on top of the engine, it consists of a single injector that delivers fuel to all cylinders. A throttle-body injector is less precise than the other types, as it is the earliest fuel injection device to enter the market after the decline of traditional carburetors. Since it has only one injector, not all fuel may enter the cylinders. If you're the budget-conscious type, the throttle-body injector is the best choice because it costs less and is easier to maintain.
Multi-port fuel injectors are more advanced than single-port, throttle-body injectors. These injectors spray fuel simultaneously into the cylinders, and they are highly efficient in metering gas into the engine, resulting in better, more precise fuel delivery. Multi-port fuel injectors don't come cheap, but they do offer more power and greater fuel economy. If you want to enjoy these benefits, then you must be willing to pay the price and shell out more money.
Sequential multi-port fuel injectors are the most advanced and offer the most precise fuel delivery. Each injector is programmed to spray fuel to a particular cylinder right before it fires unlike the multi-port, which delivers fuel simultaneously. Quicker response, better fuel economy, and greater power per stroke are just some of the benefits of this type of injector. However, this can be quite heavy on the pocket, so you have to weigh the pros and cons first before purchasing it.
Fuel injector replacement cost
The simplest type of fuel injector is relatively cheap and may cost as low as $25. Depending on the brand and function, some fuel injectors may go over $100. Double this amount for labor costs if you don't plan on doing the repair and replacement yourself. For high-end vehicles, replacement and labor costs may go up to $300. If you want to save more money, purchase a fuel injector that fits your car's specs and follow the instructions on the installation manual. DIY repair is definitely the way to go if you want less expenses.
How to Replace Your Fuel Injector
Fuel injectors deliver a precise amount of fuel to the cylinders for optimum fuel combustion. This pressurized fuel is necessary to keep your engine running at peak operating performance. Damaged fuel injectors will not be able to spray fuel into the combustion chambers properly, creating an imbalance in the air/fuel mixture. This can affect the engine's operation, so you need to replace a busted fuel injector right away. Here are the tools you'll need and the steps in replacing a damaged fuel injector:
Difficulty level: Difficult
Tools that you need:
- Flathead screwdriver
- Allen socket
- Fuel injector puller
- Open-end wrench
- Safety glasses
- Protective equipment (gloves, closed-toe shoes)
Step 1: Start by disconnecting the fuel pump relay and main fuel line. Discharge the fuel lines first for safer fuel injector removal.
Step 2: Loosen the screws holding the fuel rail connector to the engine block. Disconnect all wiring connected to the rail and tug it away from your fuel injectors.
Step 3: Unclip the electrical wiring connected to the busted fuel injector. Using a fuel injector puller, pull out the said fuel injector. You can do this by sliding the puller underneath lip in the housing and popping out the injector.
Step 4: A hole is left open in the intake manifold once the damaged fuel injector is popped out. Leave it open but don't let anything fall inside it. Be very careful with the open hole, as this will require additional repair work if it gets damaged. Give the new injector seals proper lubrication first before you install them.
Step 5: Place a new fuel injector inside the hole. Reconnect all wirings and tighten the screws back in place. Reconnect the main fuel rail to the engine block. Do a road test to confirm if the fuel injectors were installed correctly.