Originally Posted by saga
just a thought but the vacuum line is going to have fuel in it so unless you want the fuel pouring out you pinch it while it's disconnected. or am i wrong and the vacuum line going to the fpr has no fuel in it?
No the vacuum line has no fuel in it, when u disconnect it and pinch it that means that you are reading fuel pressure at wide open throttle, the vacuum is just for pressure, its not a fuel line.