So i have an 01 lb7 with everything stock past few mornings i have had to prime the truck. go out to it, turn the key on, everything cycles, then cranks. the truck starts for about 5 sec, then dies. pop the hood, prime the filter, go back, cycle key, waity to start, cranks longer, then fires and runs fine till she sits. i do not notice any fuel smell or a leak anywhere. this has happened before, but once once in a blue moon. now it's been every day since friday. any guesses? i did a search on losing prime and the results were not what i was looking for.