What happens if there is no injector pulse?
Since you have spark, we know that the ecm is receiving the crankshaft position sensor signal, so the ecm should also then trigger the injector pulse. If there is power at the injectors and no injector pulse then the ecm is at fault. Ask Your Own Kia Question Customerreply replied 7 years ago
Why does my carb spray have no injector pulse?
I have no injector pulse. I have plenty of fuel pressure and both crank sensors and the cam sensor are good. If I spray carb spray through a vacuum hose, it runs fine, but I’m getting nothing through the injectors. What else besides the PCM would control the injectors other than the cam and crank sensors?
Can a PCM loose all 6 injectors at once?
The PCM is set up so that it has individual injector drivers, Meaning that you could loose 1 or 2, but loosing all 6 at one time is very unlikely. Injectors do run off both crank and cam sensors, but mostly off the cam. And when the cam sensor does fail, The PCM goes into default mode, using the last stored run.
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?
How can I tell if an injector is bad?
- Start the engine and allow it to reach normal operating temperature.
- Check the temperature with the spray bottle of water if an infrared sensor is not available. Spray water on the exhaust manifold where it attaches to the head.
- Raise the rpm of the engine if the exhaust manifold runners are to close to call.
What are the signs of a dirty fuel injector?
Symptoms of dirty fuel injectors may include: hard starting. rough idle. throttle “tip-in” hesitation. pre-ignition (sometimes heard as that ‘pinging sound’) poor overall performance. decreased gas mileage.
What are the symptoms of a faulty injector?
9 Common Bad Fuel Injector Symptoms Rough Idle or Engine Stalls. Because your vehicle is not getting enough fuel or an uneven supply of fuel, the RPM while idling drops below the optimal level Engine Vibrates. A faulty fuel injector will cause the corresponding cylinder to not be able to fire. Engine Misfires. Check Engine Light Turns On. Fuel Leak. Fuel Odor. Engine Surge.
How do you check injector pulse?
you can check for injector pulse with a test light, simply put the test light between the 12v pin and the trigger wire on the injector plug and crank the engine, it will flash each time it pulses.. easy….