symptoms of a bad injector?

[m4xwellmurd3r]

well i've been cleaning my car a bit, trying to get it running right. i don't think number 3 is getting any fuel. pull the plug and it appears to not be getting fuel. pull off the injector wire, nothin changes, pull off the plug wire, nothin changes. number 1 had the same problem, but it turned out the actual injector wire was corroded, fixed it by cleaning it. but number 3 i cleaned as well, no change. I drove it around my complex a bit and it started clearing, but once i parked and let it idle a bit, it sounded rough again.

I'll be the fuel rail is gunked up or soemthin.

it does have a bit of trouble reving if you try smashing the throttle, but give it a bit less and it'll rev up no problem.

it's a 78 280z i've been fighting the grounding gremlins all weekend haha. i finally got that sorted, but i do believe the injectors and fuel lines are crudded. I just want some opinions before i dive in and spend money where it's not needed

(it does get spark to all cylinders.)

[zbane]

It just so happens that there is an active thread going about this right now.

There are a couple companies mentioned that work on injectors, and Stephen has posted a photo of his injector checker...

http://www.classiczcars.com/forums/showthread.php?threadid=27956