The car needs a new pump. At about $215 for a brand new Bosch pump, the same as the original, bought online here such as from FastLane (see the link above), for most people it won't possibly be worth it to take the risk of getting stuck somewhere. If you search under my threads you'll see some DIY hint I have for changing the pump on my car. It's a relatively easy job but it is dangerous (gasoline) and very messy. A shop who does it for you shouldn't charge much to do the job.

If you are going to go to the trouble of taking it out and trying to dump kerosene down it/etc, I would personally go ahead and change it. If you go back there too many times (taking it on/off) you increase the risk of damaging other hoses like the fuel line to the tank which if you aren't careful with will crack so don't clamp it anyway. Again, I'd just put a new one in there, you have every indication it needs to be replaced. They are a common maintenance item on these cars at 100K+ miles