I have a 91, B2600i 2wd pick-up. I have a miss or what feels like a miss. I put new plugs, wires, rotor button, and cap. Ran injectorcleaner through it. It doesn't do it all the time though.It only lasts a couple of seconds at most. But the other day it did it then 5 minutes later the lifters ticked for a minute. I never lost power. I think it could be a dead plug or a bad injector. Does any have an idea what I could check before I drop a bunch of money...

Thanks for your fellow support.