I know theres a lot of people that have asked this before me but I everything I've tried hasn't done anything. I have a 1997 k2500 with a 5.7 (115k miles currently). Every morning now because its getting colder (under 60 degrees) the truck has been hesitant to start, taking 6+ cranks to get going. I had a new fuel pump put in last winter along with a new filter put in. I've put in a new ect sensor (yes the one for the computer not for the gauge) and also ran a pressure test. Key on is ~60 psi, but drops to zero after around 5 minutes, cranking is 55+ psi and idle is around 55 psi and rising to 60+ when hitting the gas. Priming it 3+ times helps maybe a little but that's debatable if its improving things or just warmer weather. No starting issues when the truck has been run recently or if its hot outside. Any help would be appreciated I just want to get it delt with before the sub 0 tempatures set in. Thanks