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What is your question?
While driving my blazer started running really rough and back firing. I got it home. I was getting a cylinder 2 misfire code along with some exhaust codes. I took it to a shop for diagnosis and they said it was the fuel injectors. $1700 so I decided to do it my self. I noticed that the #1 injector clip by the #2 intake hole was missing. I believe that it is why I have the #2 misfire code. Will it burn out? Has it damaged the engine? Not sure what to do. Any info will help thanks.
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The broken piece of the clip didn't have a pathway in-to any of the cylinders (combustion chambers) until you removed the intake and injector assembly! .. Since you did not see it laying around It may have fallen into the crankcase... You need fuel, fire and compression to fire the cylinders, do a compression test .. You are currently working on the fuel and I'm sure the ignition fire (spark) has already been tested... # 1 is the front cylinder on the drives side .. # 2 is the front cylinder on the passenger side (assuming 4.3L) .. You might as well go ahead and reassemble everything just as panned for there is little you can do about it now! .. Ain't it fun ... Good luck with it!
I reassembled and runs the same. The did a compression test with diagnosis and it passed. They said the only thing that failed was the fuel system test. Which is why they said the injectors are bad. What is there to do if the clip is in the crankcase. Would the clip cause a #2 misfire? I've had some people tell me to just run it and it will burn out. I don't know.
Problem is it seems the diagnosis was incomplete to start with as the actual fault was not proven! .. Don't worry about that piece of plastic, that ain't the trouble... Now if you're positive you have successfully completed the 'spider injector assembly' install and that did not help .. I would start looking into the ignition system .. might just need a good tune-up... Distributor rotor, cap, plug wires and spark plugs... THIS' ignition system should produce approximately 30kv spark = (30,000 volts) at the spark plugs .. proper fuel delevery and compression! .. You may need some qualified 'hands-on' help .. Again, good luck!