Clunk!

[Z Factor]

Originally Posted by Don Nelson

So...is this a fuel injector problem...fuel rail...throttle-body?

The good news is that it is probably a leaking or stuck injector. The bad news is that it is probably a leaking or stuck injector.

In all seriousness, you will have to at a minimum replace the one faulty injector. That will be the least expensive route for you. However, you should know that the other injectors could start to leak (if they aren't already) or get stuck open. Since you are in Alaska and "not a mechanic" you will only want to do this job once since it entails taking off the plenum, fuel rails, etc.
So I would recommend that you replace all your injectors now rather than hope the others will last for a few more years. Keep in mind that you can just replace the faulty ones and may not have a problem with the others for a while. But for your peace of mind and possible cost savings if you have someone else do the job, replacing them all will probably be your best bet.