What would cause fuel injectors not to fire?
So, the most likely cause, is that the fuel injectors are probably not opening. The (PCM) uses the trigger signal from the crankshaft position sensor; and/or camshaft position sensor to pulse the injectors.
How do injectors know when to fire?
The computer will determine when fuel spray begins, and how much fuel to deliver. Too much-unburned fuel going through will tell the computer that the engine is running too rich. This then means that the computer will tell the injectors to spray less fuel at each rotation.
Why is my Toyota fuel injector not working?
Toyota injectors do not open farther–just longer. When problems occur with fuel injectors, usually the problem is with the injectors leaking internally or externally, or they are dirty and clogged. If a cylinder exhibits a miss and the ignition system doesn’t turn up any problem, the fuel injector should be examined.
How can I tell if my fuel injectors are working?
These are all, fuel & air metering injector circuit related codes. Another helpful diagnostic tool is an engine stethoscope. This tool enables a car owner, to listen for any problems with the fuel injectors; by placing the tip of the stethoscope on each injector. Fuel injectors make a sharp clicking sound, when they are functioning properly.
Can a fuel injector cause an ignition Miss?
If a cylinder exhibits a miss and the ignition system doesn’t turn up any problem, the fuel injector should be examined. A fuel injector can cause a miss almost identical to an ignition miss in an engine. Look at the injectors for any leaks in the body of the injectors or at the O-ring, where they are plugged into the fuel rail.
How long does it take for a Toyota fuel injector to open?
This is calculated in milliseconds. The usual on-time or duty cycle for an injector at an idle is 2.5 to 4.0 milliseconds. Toyota injectors do not open farther–just longer. When problems occur with fuel injectors, usually the problem is with the injectors leaking internally or externally, or they are dirty and clogged.