What tells injector to fire?
What tells injector to fire?
The cam sensor gives the signal as when to fire the injector. When cold, the coolant sensor is the main factor of fuel mixture. When hot, the O2 sensor is the main influence for air/fuel mixture. The crank sensor give the signal as to when to fire the spark plug and in some vehicles it also acts as a cam sensor.
How fast do fuel injectors fire?
On a four cycle (four stroke) engine with sequential port fuel injection, the fuel injectors fire at 1/2 the rate of the RPM (ie: 3000 rpm engine speed equates to 1500 injector pulses per minute), which just happens to be the same speed at which the spark plug for a single cylinder fires.
Why is my fuel injector # 2 cylinder not getting fuel?
No Pulse I hooked a stethoscope to the injector #2 and it has no pulse. All the injectors are ticking perfectly fine. I switched injectors to stock and have 8 set of these injectors and no matter which injector I use, the #2 cylinder isnt getting fuel. The engine studders and has terrible rough idle at like 550rpm.
What should fuel pressure be if fuel injector does not spray?
You’ll have to cycle the key to prime the fuel system to do this more than once. If it does not spray, the problem is the injector or no fuel pressure. The injector should have around 1.3 ohms of resistance, if it is open or zero resistance, it is bad. The injector could be totally clogged as well. Fuel pressure should be 9 to 13 psi.
Why is my fuel injector pulse not blinking?
If still no injector pulse, then the computer is not pulsing the injectors open for some reason and more testing will be needed. 4) Again, you want the Noid light to blink consistently when cranking the engine over.
When is a fuel injector not a batch fire?
It’s not a batch fire setup except when cold starting and under acceleration enrichment. The DSM ECU uses sequential firing of the injectors most of the time, we have injector drivers for each injector. It’s not a batch fire setup except when cold starting and under acceleration enrichment. Click to expand… Ah yes, you’re right.
No Pulse I hooked a stethoscope to the injector #2 and it has no pulse. All the injectors are ticking perfectly fine. I switched injectors to stock and have 8 set of these injectors and no matter which injector I use, the #2 cylinder isnt getting fuel. The engine studders and has terrible rough idle at like 550rpm.
What causes a spider fuel injector to misfire?
This case study will help you to diagnose a ‘Spider’ fuel injector that is stuck open due to the PCM having fried and causing one of two things: A misfire condition or an engine hydrolock condition (a no crank condition caused by gasoline filling up an entire engine cylinder).
What should I do if my fuel injector is stuck?
Don’t force it or you will break it, only apply gentle hand pressure to try and move it. If it is stuck then don’t tap or hit it as it will damage it. You would need to take it to a diesel engineers to have the seized element replaced if you have no luck.
It’s not a batch fire setup except when cold starting and under acceleration enrichment. The DSM ECU uses sequential firing of the injectors most of the time, we have injector drivers for each injector. It’s not a batch fire setup except when cold starting and under acceleration enrichment. Click to expand… Ah yes, you’re right.
