First off…This is NOT a forum for Tom and Ray. Just other car enthusiasts…some are mechanics…some just like cars.
What year is your truck???
I’m assuming that this is fuel-injected. It sounds like it’s flooding. Too much gas and not all of it is getting burned up when existing the exhaust. This is NOT a good situation. First it can destroy the catalytic converter…and second it can dilute the engine oil.
Knowing the model year will help determine what the cause could be.