Start the truck let it idle for a min and go its fine but seems like its missing on its fire. start and let idle for ten mins and it wants to shut off ,when you let off gas then you get black smoke out the exhaust. any ideas????
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If you hold the pedal to the floor it puts the fuel system into Clear Flood Mode. This prevents the injectors from firing and lets the already present fuel burn out. Now if this has to be done on every short trip you probably have a leaking injector.
Does the vehicle seem to crank slowly or stop and then crank when this happens?
you could have a bad injector spider if the truck is vortec,if not look to the idle air control valve if this part is bad it won't get the right amount of air and flood the truck out, hints why you are smelling fuel, also look at to o2 sensor if this is bad the computer won't adjust the timing another reason you're smelling fuel . hope this helps you and good luck!
Probably a good idea to change filter. Gas in oil due to attempted starts and flooding. Additives will draw out water and make white smoke. Been there, seen it. New gasahol will separate within 6 months and will draw and accumulate moisture like diesel. Since no default lights are on you could still try autoparts store like Autozone or similar and ask for test but without faults probably a no show. The additives could cause high idle until you are burning 100% gas. Check to see if all vacuum lines are correct after removing air filter.
trouble as that engine light has to be on did you connect it proper first plug in obd 2 scan tool turn sign on do not crank eng! press the scan button it should have something for you these are sensitive and come on quite easy!