Lots of tech available in the 7.3 forums. It's best to search first, because most common issues have been covered multiple times. If a search doesn't turn up a suitable answer, ask away, someone will help.
Welcome.
Edit: Oh, it's a good idea to post the details of your truck in your signature, year, make, model, engine, transmission, 2wd or 4wd, any non-oem replacement parts you've installed like starters and water pumps, and any performance modifications you've made, like exhaust, air filter/intake, chip/programmer etc. It just helps people who are trying to help you know what you're working on and anything you've done.
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The Diesel Garage
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A forum community dedicated to Diesel engine owners and enthusiasts. Come join the discussion about performance, builds, ecodiesel, towing capacity, modifications, classifieds, troubleshooting, maintenance, and more!