Why is there no pulse on fuel injector?

Why is there no pulse on fuel injector?

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. This is a good signal.

How does the engine control unit control the injector pulse?

Question: What controls the fuel injector pulse? Ans: The engine control unit is the electronic brain that used to control the fuel injector pulse by gathering data from various sensors along the fuel line

How to check fuel injector pulse using a Noid light?

This is a awesome test because it can be done very fast using a very inexpensive tool called a Noid light. This test will tell you if the computer is pulsing the fuel injectors open when cranking the engine over.   Most of the time this test is done when the engine is cranking over but not starting.

How does the fuel injector work in a car?

All modern gas-powered automotive engines use fuel injectors to deliver fuel to the combustion chamber. Varying loads, speeds, and temperature conditions require the fuel delivery to be adjustable, and that is accomplished through changes to injector pulse width.

What causes no power to fuel injector pulse?

Ans: The engine control unit is the electronic brain that used to control the fuel injector pulse by gathering data from various sensors along the fuel line Question: What causes no power to fuel injectors?

Question: What controls the fuel injector pulse? Ans: The engine control unit is the electronic brain that used to control the fuel injector pulse by gathering data from various sensors along the fuel line

How do you test a fuel injector ( ANS )?

Ans: By using a simple diagnostic tool called NOID light, this tool detects a digital signal coming from the ECU and flashes an LED light, so if there is no LED flashing during cranking, this means that there are no pulses coming out of the ECU. Question: How do you test a fuel injector?

What should the target idle cell be on a car?

Ideally, the target idle cell should be in the center of the RPM & kPa range the engine idles in. Some engines exhibit better idle stability than others, as seen on the Fuel & Timing Tables. The goal is to configure the idle area so the idle has equal range above & below the target value.

Why are my index 12 injectors not working?

The seal would disappear off the tip and cause stutter and misfires. Finally I installed all brand new Index 12 injectors, and when I got to 6 I noticed that it simply fell all the way into the channel without any pressure needed to seat it down.

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

The seal would disappear off the tip and cause stutter and misfires. Finally I installed all brand new Index 12 injectors, and when I got to 6 I noticed that it simply fell all the way into the channel without any pressure needed to seat it down.

Ans: By using a simple diagnostic tool called NOID light, this tool detects a digital signal coming from the ECU and flashes an LED light, so if there is no LED flashing during cranking, this means that there are no pulses coming out of the ECU. Question: How do you test a fuel injector?

Is the Check Engine light blinking when turning on?

Light blinks like crazy will turn over no start . also code 11 blinks once and then a again a sec later . ive tryed everything read the codes no codes but the check engine light is on? It doesnt stay on for 1 sec let alone 3 when turning on?

What does it mean when there is no injector pulse?

In case of that, there is no injector pulse or spark, this means that is your ECU has failed in operating in this case you have to get your ECU changed or visit an expert. You May Like: Low Fuel Light Comes on When Tank Is Full Causes and How to solve it Question: What controls the fuel injector pulse?

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?

Is there a problem with the number 2 injector?

Now, since it’s only the number 2 injector, it shouldn’t be the injector driver in the ecu. Look at wiring diagrams again and trace the injectors back to the ecu, checking for voltage just like you did before. Most likely you have an open somewhere. found the problem, the wire from the #2 harness to like where the CAS looked a little brittle.

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. This is a good signal.

How to troubleshoot your TBI fuel injection system?

Troubleshooting your TBI Fuel Injection System Most of the problems encountered while installing your fuel injection system or after a time of operation are very simple. If your check engine light is on you more than likely have a hard fault meaning something is grounded out, unplugged, operating out of range or has gone bad. See

This is a awesome test because it can be done very fast using a very inexpensive tool called a Noid light. This test will tell you if the computer is pulsing the fuel injectors open when cranking the engine over.   Most of the time this test is done when the engine is cranking over but not starting.

This is a awesome test because it can be done very fast using a very inexpensive tool called a Noid light. This test will tell you if the computer is pulsing the fuel injectors open when cranking the engine over. Most of the time this test is done when the engine is cranking over but not starting .

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.)

Can a fuel injector test be done while the engine is running?

However, you can do this test when the engine is running to see if a certain fuel injector is getting a signal to fire if the engine seems to be misfire for some reason. Below is a picture of my Noid light set. Here is a picture of the Noid light I use most of the time.