A fuel injector works on electronic pulses sent from the computer. When these pulses are received the injector sprays fuel. The timing of these pulses is congruent to the rotation of the motor, especialy the cam shaft. It's not like the old days of balancing the carb. So the fuel mixture is right. The computer does all of that for you--or--it's supposed too! If the fuel regulator went bad the fuel would not be forced through the injector. The injector needs electricity to open and let fuel through. If the fuel regulator was bad, when the injector electricaly opened, more fuel would flow through. In order for the injector to open the cam must tell the computer to send an electrical pulse to the injector so fuel can be sprayed, at the right time, through the right injector, on the right side.
Thursday, December 6th, 2007 AT 2:01 AM