Why is there no fuel injector pulse in my Toyota?
Now another thing made me confused, the little green fitting where u check fuel pressure, after i tried cranking it, i pushed in the little valve cork thing and no pressure was there, i would think fuel would shoot out. Fuel filter is about 1 year old and looks fresh.
When do fuel injectors have constant 12V?
Plugged in motor not running key on you will have 12v on both wires only when the ecu grounds the injector will you have a 12v 0v split most dvoms are not fast and will not see this as 12v to 0v. I have no idea what would cause that. One side is hot/12v the other side is ground to fire the injector.
What happens when cold start injector goes bad?
A leaky cold start injector may result in a reduction in engine performance and acceleration as a result of the disturbed air fuel ratio. In more severe cases, where a large amount of fuel is leaking into the manifold the vehicle may even experience stalling or misfires.
Which is the hot side of the fuel injector?
One side is hot/12v the other side is ground to fire the injector. The ground side is controled by the ecu. The best thing to do is get a manual/wire diagram at hondatech.info: Honda service manuals and stat unplugging stuff till you find out what happens.
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.
Why is the injector pulse on my Toyota TB not working?
Installed a new one, went to crank it and no firing up. Compression is beautiful, getting spark, fuel pump is pumping fuel, unhooked fuel line from filter and its flowing, etc, i went ahead and sprayed some BG intake cleaner into the TB and it fired up. When i stopped spraying it died.
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.
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.
Now another thing made me confused, the little green fitting where u check fuel pressure, after i tried cranking it, i pushed in the little valve cork thing and no pressure was there, i would think fuel would shoot out. Fuel filter is about 1 year old and looks fresh.
What to do if there is no injector pulse?
If after all this you got the same result, so it’s time to check the injectors itself if there is no injector pulse on one cylinder, by try to unplug injectors one at a time, if the engine starts when a particular injector is unplugged so that it is the defected one that needs to be replaced
What causes no power to fuel injectors?
The most important signals that determine the accuracy of a signal coming out of ECU to injectors are crankshaft position sensor and camshaft position sensor, so to test a bad injector, you have to check the voltage on the injector when the ignition key is turned on: NO VOLTAGE? , so what causes no power to fuel injectors?
What happens if there is no injection signal?
The ECU cannot pulse the injector without an Ne signal and will not start or run if this signal is not present. If the G signal is not present while cranking the engine, the ECU will not be able to identify when to produce the injection signal. The result will be the same, no injection pulse.
What are the input signals in a pulse injector?
These are the Ne, G, and IGf signals. Inside the ECU, the Ne Signal is used to produce an injection chive signal. The G signal is used to determine the timing of the injection signals. The IGf signal is monitored for fuel delivery fail-safe. (With Conventional EFI, the IG signal is used to produce the injection drive signal.)
Are there any problems with the Toyota Tacoma?
This was subject to a recall, but the problem only affected a limited number of Tacomas. After the 2017 model year, very few problems have been reported for the Tacoma. Premature Clutch Wear: Symptoms include hesitation before accelerating and jerking during gear shifts.
Why is the radio turning off on my Toyota Tacoma?
In late 2016, Toyota agreed to pay $3.4 billion to help 2005-2010 Tacoma owners fix this issue. Radio Turning Off by Itself: The radio turning off at random times (or when going over a bump) is a common issue experienced by Tacoma owners. Toyota addressed it by replacing the radio free of charge for Tacomas still under warranty.
Do you need a ground for an injector pulse?
For a ground, a pulsing ground to be more accurate. The ECM provides the ground to complete the circuit to turn the injectors on and off. You can also connect the test light across the two terminals to check for pulses. Did you find the recommended reading relevant to this discussion?