Alright, My truck has a hard time starting once fuel pressure drops after the truck has set for a while. On a cold start, the initial pressure is around 12 psi, then if you turn the key to try and start again it jumps to around 32 psi, and will start then. I have done a filter and fuel pump replacement and I get the same results. Does any one know why it takes two trys to start?

Brett

 

You might have a leaky injector, or a problem with the regulator (depending on your vehicle). I suspect a leaky injector.

 

Ttt