Fuel Injector bad??

[AntiVenmVette007 at aol.com]

   Quick question. How do I test my fuel injectors now that I have removed 
all of them?? 
     My #5 had suddenly sprung a leak that was bad enough to saturate the top 
of my intake after about 1 min. Now that I have it in my hand, it seems fine 
(besides the old hard O-rings) but all my injector O-rings look the same, yet 
only this one was leaking?!? Is the housing cracked?? Aside from what looks 
to be a few ware marks about the size of the wires use to fire the Injector 
it looks fine. But IM afraid that IM going to put the new O-rings on and 
after all the trouble, it still might leak. TIA
   Justin
P.S. I have noticed a slight miss lately. And last month I did add an 
adj.Fuel Pressure reg. I raised the pressure about 8 lbs.
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