Replacing Fuel Injectors: 2007 Infiniti G35s Step-By-Step Guide

If you're looking to change the fuel injectors on your 2007 Infiniti G35S, there are a few things you should know. Firstly, fuel injectors are the primary means of getting gasoline into the engine in non-carburated vehicles. They are mounted in the intake manifold and spray fuel directly at the intake valves. If your fuel injectors are not functioning properly, or if they are not providing enough fuel to your engine, it may be time to upgrade them. Aftermarket fuel injectors, paired with an upgraded fuel system and engine management, can help improve performance and keep your engine in optimal shape. When choosing fuel injectors, it's important to select ones that are compatible with your vehicle's specific make and model. Additionally, fuel injectors are sold individually, so you will need to purchase six injectors for your six-cylinder engine. The installation process involves unplugging the harness from the fuel rail and popping out the factory injectors, and it is recommended to install new o-ring seals to prevent leaking.

Fuel injector options

There are a variety of fuel injectors available for the Infiniti G35, and the best option for you will depend on your specific needs and preferences. Here are some of the top options to consider:

Hitachi Fuel Injectors

Hitachi is a Tier 1 Original Equipment Manufacturer (OEM) for fuel injectors and offers both new and remanufactured fuel injectors for the Infiniti G35. Their fuel injectors are designed to optimize fuel economy and performance by providing accurate and application-specific spray patterns with quick response times. Hitachi's high-speed electromagnet and pintle precisely control the flow of fuel, ensuring that the injectors meet or exceed OE performance and durability standards.

Carquest Premium Remanufactured Fuel Injectors

Carquest offers a line of remanufactured OEM fuel injectors that are remanufactured in a state-of-the-art facility in the USA using a proven 15-step process. Each injector is 100% tested under multiple operating conditions to ensure it meets or exceeds OE specifications for flow rate, spray pattern, coil resistance, form, fit, and function. Carquest's remanufactured fuel injectors include new external seals and O-rings made of premium OE-quality materials.

Carquest Fuel Injectors

Carquest also offers a line of high-quality fuel injectors designed to meet OE appearance and performance standards, providing a cost-effective solution for professional technicians and DIYers. These fuel injectors feature precision-wound and trimmed solenoid windings, high-temp Viton O-rings, and fiber-optic yttrium aluminum garnet "YAG" laser welding to ensure quality and performance.

Standard Motor Products Fuel Injectors

Standard Motor Products manufactures fuel injectors to OE requirements, meeting federal emissions and fuel economy standards. Their fuel injectors provide an exact OE fit for easy installation and use premium internal components that are compatible with alternative fuels or fuel blends, including ethanol mixtures. The fine atomized spray of these injectors helps to reduce emissions.

Bosch Fuel Injectors

Bosch is a recognized OE leader in fuel systems technology and offers fuel injectors that provide exact flow and original spray patterns for optimal performance. Their fuel injectors enhance homogeneous and lean-burn combustion, enabling engine downsizing while maintaining desired horsepower. Bosch's fuel injectors have a return rate of 1 part per million (PPM), making them an industry benchmark.

DeatschWerks Fuel Injectors

DeatschWerks offers fuel injectors in a range of sizes, from 2200cc to 850cc, compatible with the Infiniti G35. Their fuel injectors fit various models, including the Infiniti G35, G37, Nissan 350Z, and 370Z, among others.

Injector Dynamics Fuel Injectors

Injector Dynamics offers a range of fuel injector sets for the Infiniti G35, including 725cc, 1000cc, and 2000cc options. Their fuel injectors are designed to provide precise fuel dispersion and optimized fuel efficiency and performance. Injector Dynamics fuel injectors are available with clips and pins, pigtails, or plug-and-play adaptors for easy installation.

Installation process

Upgrading the fuel injectors on your 2007 Infiniti G35S is a relatively straightforward process. Here is a step-by-step guide on how to do it:

• Park your car on a level surface and engage the parking brake for safety.
• Open the hood and locate the fuel rail, which is mounted on the intake manifold.
• Disconnect the harness from the fuel rail by unplugging the electrical connector. This will cut power to the fuel injectors.
• Carefully pop out the old fuel injectors from the fuel rail. You may need to use a small screwdriver to gently pry them out.
• Before installing the new fuel injectors, it is important to clean the fuel rail and the area around it to remove any dirt or debris.
• Take your new fuel injectors and inspect them to ensure they are in good condition and free of any defects.
• Install new o-ring seals on each of the new fuel injectors. This is important to prevent fuel leaks.
• Carefully insert the new fuel injectors into the fuel rail, ensuring they are securely seated.
• Reconnect the harness to the fuel rail and secure it in place.
• Close the hood and start the engine to check for any leaks. Ensure the new fuel injectors are working properly and spraying fuel directly at the intake valves.

It is important to note that fuel injectors are sold individually, so you will need to purchase six fuel injectors for your Infiniti G35S. It is also recommended to consult a mechanic or a professional if you are unsure about any part of the installation process.

Fuel injector sets

Fuel injectors are an essential component of your Infiniti G35's fuel system, delivering fuel to the engine for combustion. Over time, fuel injectors can become clogged or malfunction, leading to poor engine performance and reduced fuel efficiency. Replacing your fuel injectors is a relatively straightforward process and can help restore your vehicle's performance and fuel economy.

When it comes to fuel injector sets for your 2007 Infiniti G35s, there are several options available in the market. Here are some detailed instructions and recommendations to help you choose and install fuel injector sets:

Fuel Injector Brands:

• Carquest Premium: Carquest offers a range of fuel injectors, including remanufactured and multi-port options. Their products undergo a rigorous 15-step process and are tested under multiple operating conditions to ensure they meet or exceed original equipment (OE) specifications. Carquest fuel injectors are known for their precision and quality.
• Hitachi: Hitachi is a Tier One original equipment (OE) supplier to major automobile manufacturers. Their fuel injectors are designed to optimise fuel economy and performance with accurate fuel delivery and application-specific spray patterns. Hitachi's fuel injectors are known for their durability and precision.
• Bosch: Bosch is a recognised leader in fuel systems technology, offering fuel injectors that enhance combustion and engine performance. Their gasoline direct injection (GDI) system provides a cleaner and more economical engine operation. Bosch fuel injectors are known for their reliability and contribution to engine downsizing.
• Standard Motor Products: This brand manufactures fuel injectors that meet OE requirements and federal emissions standards. Their products are designed for easy installation and use premium internal components for compatibility with alternative fuels or fuel blends.

Purchasing Fuel Injectors:

• When purchasing fuel injectors, it is essential to consider the reputation and reliability of the brand. Choose trusted brands like Carquest Premium and Hitachi, which are recommended by Advance Auto Parts for the Infiniti G35.
• Compare prices and features to find the best value for your money. Fuel injectors can vary in price, so set a budget and explore options within your range.

Installation Process:

• While the installation process may vary slightly depending on the specific fuel injector set you choose, here are some general steps:
• Locate the fuel injectors in your engine bay. They will be connected to the fuel rail and intake manifold.
• Disconnect the electrical connectors and fuel lines from the injectors.
• Remove the old fuel injectors by unscrewing or unbolting them from the fuel rail or intake manifold.
• Clean the area around the fuel injector ports to ensure no debris enters the engine.
• Install the new fuel injectors by following the manufacturer's instructions for proper placement and torque specifications.
• Reconnect the fuel lines and electrical connectors to the new fuel injectors.
• Start the engine and check for any leaks or unusual noises. If everything appears normal, take your vehicle for a test drive to ensure optimal performance.

Remember to consult a qualified mechanic or a professional technician if you are unsure about the installation process or have any concerns. They can guide you through the process and ensure a safe and proper fuel injector replacement.

Fuel injector brands

When it comes to your 2007 Infiniti G35S, you will want to use fuel injectors from trusted brands. Some of the top fuel injector brands for this vehicle include Carquest Premium, Hitachi, Bosch, and Standard Motor Products.

Carquest Premium fuel injectors are remanufactured using a proven 15-step process in a state-of-the-art facility in the USA. Each injector is 100% tested under multiple operating conditions to ensure optimal performance and longevity.

Hitachi is a Tier One OE supplier of fuel injectors to major automobile manufacturers globally. Their fuel injectors are designed to optimize fuel economy and performance, providing extraordinary accuracy and application-specific spray patterns. Hitachi's high-speed electromagnet and pintle precisely control the flow of fuel, ensuring your vehicle meets strict emission standards.

Bosch is a recognized OE leader in fuel systems technology, with over 45 years of experience in gasoline fuel injection. Their fuel injectors provide exact flow and original spray patterns for optimal performance, enhancing homogeneous and lean-burn combustion.

Standard Motor Products manufactures fuel injectors to OE requirements, meeting federal emissions and fuel economy standards. Their fuel injectors provide an exact OE fit for easy installation and are compatible with alternative fuels or fuel blends, including ethanol mixtures.

When replacing the fuel injectors on your 2007 Infiniti G35S, it is important to refer to the vehicle's service manual or seek guidance from a qualified technician to ensure the correct procedures are followed.

Fuel injector costs

The cost of replacing the fuel injectors on a 2007 Infiniti G35S varies depending on the brand of the fuel injector and the service base. The average cost of replacement is $1,186, with $850 for parts and $336 for labor. The price may vary depending on your location.

For instance, Advance Auto Parts offers fuel injectors for the Infiniti G35 starting from $48.49. The price for parts at AutoZone ranges from $6 (refundable core deposit) to $4647.63.

Frequently asked questions