Should be a quick fix?

[Keen240sx]

o.k. I think what i have on my hands a quick fix. I brought my 89 24e in to my mechanic because the engine started shaking and it was running very poor. They told me my # 3 fuel injector was out. I ran a couple tests myself that i found searching on this page and everything is pointing to the injectors. They wanted $400 to change it out with rebuilt parts!? I guess where im from thats a decent quote because i couldnt find one much cheaper. anyway, Im decent under the hood but i never worked on the fuel injectors before. I looked at the tech area on this page and it didnt help me to much. If someone could just throw me a couple pointers before i tear into it i would GREATLY appreciate it. (junkyark here has about 5 89 90 240's and they have warrenties on everything...what should i look for when getting the part?)Thanks!

[neverlift]

either NISSAN injector seals,or gp sorenson......

its a cake walk so long as they seal up right. I will say this before yo go buying anything, check that injector. Start car and unplug if car runs the same its bad if it gets worse you have another problem.

[engineperson]

i had the same exact problem w/ my 24de. the car wold shake really bad at idle(free massage!). so pulled the wire off and their was no change. i went to autozone and pick one up for about 90$. i would just recomed going to the junk yard and saving some bread if thats the problem.