Why are my fuel injectors spraying too much fuel?
The most common fuel system problems that can cause idle issues are a malfunctioning fuel pressure regulator or dirty or leaking fuel injectors. Either one of these can cause too much fuel to enter the intake, thus affecting the idle. If you see fuel leaking out, replace it and recheck for your idle problem.
Do fuel injectors spray?
A fuel injector must spray fuel as a mist because it’s easier for your engine to burn. If a fuel injector is dirty or clogged, your engine won’t get the necessary flow of fuel to mix with the air, which will lead to poor acceleration, engine performance, and gas mileage.
Can injectors over fuel?
Poor fuel economy An inefficient fuel injector will reduce the overall fuel economy of the engine. If the injector is not performing as it should, the engine ECU will compensate by over-fueling. This causes the engine to run “rich”, leading to more fuel being used than necessary.
What happens if fuel injector doesn’t spray correctly?
If an injector doesn’t spray the fuel correctly or stop spraying altogether, your engine might stutter, misfire and even stall. Once it happens, one or multiple cylinders might not produce any power anymore, creating a load on the other cylinder still working.
What causes a fuel injector to get clogged?
Dirty Fuel Injectors – Residual fuel additive that is not dispensed within the manifold can leave a film on the fuel injectors. It can become a crusty coating on the injectors because of the heat within the engine. This residue can clog the injectors, impeding the spray. Clogged Fuel Injectors – Many things can clog up the fuel injectors.
How does the fuel injector work in a car?
The fuel pump in your car creates the fuel pressure, and a tiny electromagnetic switch inside the fuel injector controls the plunger. When activated, the fuel injector sprays a fine mist into the intake manifold. Your car’s computer controls all of this in real-time and makes adjustments as you drive.
How to check the fuel spray on a TBI system injector?
You can visually inspect the fuel spray on TBI system injectors. Fuel flow spray is readily accessible, making it fast to check for potential problems. Remove the cover off the air cleaner housing (where the air filter lives). Ask an assistant to start (or crank the engine, if it doesn’t start). Check the spray pattern coming our of the injector.