I am wondering if the fuel pump in my 72 D200 is going out. It has a mechanical fuel pump on the lower front right of the LA360, under cylinder number 2. The last two times i have driven it, it has left me temporarily stranded for an hour each. It also runs very rough at idle, which is very low. The engine also shakes noticeably (almost 1 inch of travel). I noticed that the in-line fuel filter is nearly empty, with only about a quarter inch of yellowish gas going through it. It used to be completely full when i first installed it. It has bad hesitation under light acceleration and the last two days it dies when it gets hot, somewhat like vapor lock. How do i test the fuel pump? How hard is it to convert to an electric fuel pump, and how much would it cost?
According to my records, the fuel pump was last replaced in 1998, and it sat from 06-08, and was run periodically but not road legal from 08-12.
Truck: 1972 Dodge D200 adventurer sport
Engine: 5.9 L 360 CU LA360
Carb: Carter AFB 9636SA