7.3 Powerstroke Bad Injector testing - going through the motions of finding a bad injector

Excessive smoke - Check
Engine knocking- Check
Hard start - Check
Smoke rings from tailpipe - Awesome
Walkthrough video from start to finish of diagnosing a bad injector on Ford 7.3 Powerstroke. Discussion of functions and logic of what can and cannot go wrong, what you might see on your scanner that has nothing to do with the true problem or even the bad injector. One bad injector can make several look bad in a contribution test, how to ohms test your injectors and using a heat gun to find the bad cylinder.
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