I had to install a set of fuel injectors on my 1992 corvette (base). I used the boss ones. Pretty sure i got the regular settings (I looked it up at the time to make sure it was the same as far as pressure goes). While I was working on it a leaf went down in a port (no garage =(). It was a small leaf and from other sites it said it should be fine.

But my engine has been running rough now. It starts fine idles ok (but it feels off). And it feels rough when gaining speed (specially from 5-6 it gets a real hard shake to it unless I get the rpm's up there).

The only other time I had this issue is when I actually had a bad fuel injector. And I only found that it because it literally blew out and fuel sprayed all over the engine.

Should I worry that the leaf could've caused damage or is it most likely just a bad fuel injector (while they are boss and I heard good things about them I did buy them through ebay so..) And if I put it on a computer will that tell me if it is just an injector/opti-spark.

And any tips on a good diagnostic computer to buy would be helpful also.