Can a check engine light be used to test a fuel injector?

Can a check engine light be used to test a fuel injector?

If you have an OBDII scanner and your vehicle’s check engine light is on, you can check to see if there have been any errors in the vehicle’s computer regarding that cylinder or injector.

What is the diagnostic code for Ford check engine light?

Refer to our Generic OBD II code list for definitions on all other Ford diagnostic trouble codes. P1000 OBD System Readiness Test Not Complete P1001 KOER Test Cannot Be Completed

How to test the fuel injectors ( 5.0L, 5.8L )?

Testing the fuel injectors on the fuel injected 5.0L engine and 5.8L engine can be quite a challenge since half of the 8 fuel injectors are under the intake manifold plenum. In this tutorial, I’m gonna’ show you a specific diagnostic strategy you can use to find out if you do indeed have a bad fuel injector on your hands or not.

What are the symptoms of a bad fuel injector?

The most common symptom of a bad fuel injector is an engine miss at idle or when you accelerate the vehicle. Other symptoms include but not limited to: Lack of power. Bad gas mileage. Check engine light (CEL) is on. Now, to go into more specifics of how a fuel injector can fail on your 5.0L engine or 5.8L engine:

If you have an OBDII scanner and your vehicle’s check engine light is on, you can check to see if there have been any errors in the vehicle’s computer regarding that cylinder or injector.

How can you tell when fuel injector is activated?

Lean your ear close to the end of the metal rod or screwdriver that is opposite the injector. As the engine runs, listen for an audible clicking sound given off by the injector. This sound indicates the injector being activated.

What should the fuel injector reading be on a Ford 4.6L?

Don’t forget to write down what cylinder that reading belongs to. The average reading, for each fuel injector, should be about 11-18 Ohms. This will vary just a bit in your specific Ford or Mercury or Lincoln 4.6L or 5.4L equipped car, pick up or SUV. Now, repeat test steps 1 through 4 on the remaining 7 fuel injectors.

How is the fuel injection self test done?

NOTE: This test is only available on Sequential Fuel Injection (SFI) Engines. Start an engine running test and press the accelerator lightly within 2 minutes after the last code is output. The PCM will cancel each cylinder in turn and measure the RPM drop.