Alright, I have an 2000 DOHC Sable with an intermittant crank no start condition that has been bugging me for a while. When I start the car in the morning, I'll crank the motor for 5 secs and it won't start. As soon as I try again it starts right up and runs perfect. I don't have a check engine light either. If I let the car sit for 5 mins or so, it will start just fine. I have even tried to turn the key 4-5 times to prime the fuel pump and that doesn't help. The only thing that happens is sometimes when doing the initial cranking, The engine seems to backfire a little and actually pops off a vacuum line from the rear of the upper intake manifold. I have also replaced the cam position sensor. I'm thinking it has something to do with the timing or the timing of the injectors. What do you guys think? Thanks!