What Causes Insufficient Power in EFI Engines Without Fault Codes?
2 Answers
Fuel system pressure being too high or too low, poor fuel injector performance, or incorrect sensor signals. Below is an introduction to EFI: Introduction: EFI is a type of engine that differs significantly from carburetor engines, including in operational methods. FAI EFI System: Free Armature Injection (FAI), FAI is an independent and complete technological system developed by Zhejiang Feiya Electronics Co., Ltd. It encompasses invention in working principles, technological breakthroughs, and theoretical advancements. The FAI technological system provides a technical platform for upgrading small engines, enabling comprehensive improvements in performance, fuel consumption, and emission pollution. The emergence of the FAI technological system marks a milestone in the development history of small engines.
I've encountered several instances while driving my fuel-injected car where there was no malfunction light but the power just wouldn't pick up, feeling particularly sluggish during acceleration. The issue might lie in the air system - perhaps the mass airflow sensor is too dirty with accumulated dust, leading to inaccurate readings and causing the ECU to improperly adjust the fuel mixture. Alternatively, there could be leaks in the intake piping, resulting in insufficient air intake. Common fuel system issues include clogged injectors from impurities in gasoline causing poor fuel spray, low fuel pump pressure leading to inadequate fuel supply, or a dirty fuel filter obstructing the fuel line. In the ignition system, incorrect spark plug gaps (though they don't always trigger codes) or weak sparks from aging can cause problems. Additionally, a clogged catalytic converter increases backpressure, making the car feel like it's struggling to breathe. I've tried cleaning the air filter and throttle body myself, but I'd recommend visiting a professional shop to check data streams with diagnostic tools to avoid more serious issues.
