checking lifters
 

I don't post much, but I love the search section. I can't find the proceeding:

I have a 93/95 carbed cobra block with e303 cam and hyd. lifters. How can I tell if my lifter is bad if its out of the block? Is there a way to clean them? Am I wasting time, should I just replaced all lifters? Is stock ford lifters for that year ok? I really don't race this car, but punch it from time to time.

Thanks.