still trying to diagnose a mis-fire, i baught some used injectors off a guy who bolted on a s/c locally for 40 bucks. they have about 60k miles on them, which is 13k less than my current ones have.

they look to be in good condition, i want to swap them onto my car to see if that changes the misfire at all. is there anything i should know about or should i just plug and chug?

 

bump

 

i know you can have injectors cleaned and flow tested to make sure they are all ok and matching............but im pretty sure that cost more than its worth (in your case).

 

I would just make sure they are reasonably clean and the O-rings
are in good shape and try them.

I just did the same thing , have the common LT1 stumble, miss,etc. Put them in day before yesterday (no change)
tomorrow the old ones go back in , no problem hour and a half
job.

 

I'd get new o-rings. P/N below if you're interested. But put a thin coating of oil on the o-ring before you put them in.
Fuel injector O-ring P/N

 

swapped the injectors out, its a night and day difference. the car starts instantly now, doesn't stumble off the line, and my miss is ALMOST completly gone, however its still there...

but driving around now is very smooth now instead of being jerky, and my idle has improved dramatically.