I am planning on looking at a 2001 to buy. The truck is 200 miles from my house. After searching the forum I see I need to check the fuel pressure. What size fittings, ect. do I need to bring to be able to check this? I think I can screw something on a schrader valve on fuel filter, but what size is this particular valve? Thanks for any info.

 

The first time I did it I used an old guage set for air conditioning.