 So what I would do at the next time you have this problem where you have a non-start condition, take and turn the ignition to the on position. You should hear the fuel pump running in the back. Don't make an attempt to crank. Then turn the ignition off. Turn it on again. Then turn it off. And on the third time, attempt to start the vehicle. If it fires up, we know that we're losing the residual pressure.