is some of my coil pack bad

Is your check engine light on? Simple enough, an engine performance check including pulling any active or memory codes from the engine's processor will reallly dial into what is wrong with your truck. Sounds like it could be dumping excessive fuel due to a fuel control issue (oxygen sensors, air intake leak, vacuum leak, etc), or a misfire due to faulty plugs and or coils / boots. Way too wide a net to cast from where I sit; a diagnostic test is really urgently needed. IF That much fuel is going through your exhaust, the next failure will be your catalytic converters, and that will be very expensive. If you have no power now, you may already have that problem.