What causes fuel injectors to spray?
When the engine needs more fuel, the time that the injector stays on (its duty cycle) increases so that more fuel can flow into the engine. When the injector is energized, an electromagnet moves a plunger that opens the valve, allowing the pressurized fuel to squirt out through a very tiny nozzle.
What sensor controls the fuel injectors?
The injector control pressure sensor detects the pressure of the fuel feeding the injectors, and sends that signal to the computer so that it can make the adjustments for optimum performance and efficiency.
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
Why is there no fuel spray from injector?
On the way home it stopped and hasn’t run for weeks now. There is fuel and pressure at the injector but no spray. There is a red wire and blue wire there. The red has 12 volts, the blue is supposed to pulse on cranking. It does not pulse.
What’s the difference between the 88 and 92 injectors?
The Throttle bodies look the same, the injectors may have some internal difference, perhaps the 92 has higher fuel pressure, the 88 only has 9 to 13 lb fuel pressure. I’m on my way to get the noid light now, its noon here.
What causes PCM to disable fuel injectors?
@jrt2020 , Josh, The anti-theft system (Pass Lock) failure will mimic this, as anti theft tells PCM to disable the fuel injectors.
On the way home it stopped and hasn’t run for weeks now. There is fuel and pressure at the injector but no spray. There is a red wire and blue wire there. The red has 12 volts, the blue is supposed to pulse on cranking. It does not pulse.
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
The Throttle bodies look the same, the injectors may have some internal difference, perhaps the 92 has higher fuel pressure, the 88 only has 9 to 13 lb fuel pressure. I’m on my way to get the noid light now, its noon here.
What kind of fuel injector does a V6 engine have?
Refer to this wiring diagram, click here. The throttle body assembly is equipped with 1 (4-cylinder engines) or 2 (V6 engines) electronic fuel injectors in order to supply fuel to regulate the air/fuel mixture.