this is driving me mad!, my zetec turbo 2.0 on fiesta inlet manifild and rail, standard fiesta rs regulator and feedand return lines, when i prime the pump and turn it off i can hear fuel pooring into the cylinders so i have luckily not tried to turn engine without checking to prevent bending a rod etc..... but for some reason its still doin it i thought a injector could ve the fault so i changed them same thing!! had to syringe it all out, yesterday the whole intake syatem filled up with fuel when the pump was left running to the point it filled cooler and looked for a exit out of air filter!!........what could be causing this? fuel pressure regulator? return line blocked?