I bought the truck a few months ago, ended up having a fuel pump problem, put new fuel pump in and the truck actually cranked up for the first in 4 years. Well now we have an even bigger problem. Truck will turn over but idles rough. Hooked up a fuel pressure gauge it's says I'm only getting 18 pounds of pressure meanwhile I'm supposed to be getting 35.. can anyone help me with this problem please?? Been trying to get the truck to actually drive for over a month now.