Fuel Injector Insights

After cleaning and testing injectors if the results are not perfect, some wonder if the injectors Ok to use? Here are the basics. Port Injectors: Flow Variance (CC/Min or LB/hr for Port injectors)  (GDI Test reports for GDI/Piezo) An acceptable average fuel injector flow variance across a set of injectors is typically: Within 2–3% for […]

If a fuel injector measures 0 ohms resistance when checked with a multimeter, it usually means the injector has an internal short circuit the coil inside the injector is shorted. What It Means Electrically: A normal injector has some resistance because of the coil wire inside. 0 ohms = short circuit, meaning the coil is […]

Testing a Gasoline Direct Injection (GDI) injector on a machine designed for Port Fuel Injection (PFI) injectors is not recommended due to significant differences in their operating principles and requirements.

Piezoelectric injectors and GDI injectors (Gasoline Direct Injection injectors) are both types of fuel injectors used in modern internal combustion engines, but they differ significantly in terms of technology, performance, and functionality.

Fuel injectors play a critical role in modern internal combustion engines by delivering fuel to the combustion chamber in a precise and controlled manner. They are part of the fuel injection system, which replaces older carburetor systems.

Gasoline Direct Injection (GDI) injectors work by delivering fuel directly into the combustion chamber of an internal combustion engine, rather than into the intake manifold as in traditional port fuel injection systems.

E-TEC (Electronic Fuel Injection Technology) fuel injectors are part of a direct fuel injection system used in certain outboard engines, like those from Evinrude.

The Mercury OptiMax air/fuel injection system, known as Direct Fuel Injection (DFI), works by using a combination of air and fuel to improve combustion efficiency and performance.

Piezoelectric fuel injectors use piezoelectric materials to precisely control the injection of fuel into an engine's combustion chamber. These injectors are commonly used in modern diesel and gasoline direct injection (GDI) engines, where high precision, speed, and efficiency are required.

Saturated and Peak & Hold are two types of fuel injectors that differ in how they are driven (electrically controlled) by the engine’s electronic control unit (ECU). The main difference between the two lies in how the injector solenoid is energized and controlled to open and close the injector.

Port injectors and GDI (Gasoline Direct Injection) injectors are two different types of fuel injectors used in modern internal combustion engines. The main differences between them lie in the way they deliver fuel to the engine, their position relative to the intake system, and their function in the combustion process.

To calculate fuel injector flow rate, you need to consider factors like engine power, fuel efficiency, fuel pressure, and injector duty cycle. Here’s how you can determine it: 1. Basic Formula for Fuel Injector Flow Rate Where: Total Fuel Demand (lb/hr): Based on engine power and fuel consumption. Number of Injectors: The total number of […]