Fuel problems

[neoviper]

Ive been having some issues with my car and have it narrowed down to fuel issues. I have plenty of fuel going into and out of my fuel rail, so im thinking i may have bad injectors. in the repair manual they say that one way to check if the injectors are bad is to measure the resistance each one gives. i checked it with my voltmeter and got 0 ohms of resistance. the manual says it should have between 2 and 3, but to be honest im not 100% sure if im even checking it right. can anyone tell me exactly how to measure the resistance or even if there is another way of doing it?

 

[Calan]

The injectors are basically just electric solenoids...you are measuring the resistance across the injector coil.

It will vary a little from injector to injector, but 2 to 3 ohms sounds correct. I just measured my FIC 650's, and they all read 2.4 ohms. A set of old 450's I have laying around all measured 2.7 ohms.

To test them, unplug the wires and use a voltmeter to measure the resistance across the two pins in the end of the injector. Make sure you have the voltmeter's range set very low, or it will read 0 even if it's a bit more.

Even if the injector coils check out, they could still be clogged or have other issues. Here is an article with some good info and test ideas:

Troubleshooting Electronic Fuel Injection Problems & Fuel Pump Diagnosis

Good luck!