Ok I have a 97 gmc 1500 with the 5.7.......The truck will not start unless you dump a little gas down the throttle body. Once the truck starts it is fine and will continue to start. If you let it sit awhile it wont start again. Would this be the spider being bad? I purchased the truck this way and it also had the intake gasket leaking. I am about to put it back together but want to solve this problem too.