The bowl won't fill without cranking the motor over. Also, it won't set a code for fuel pressure as its all mechanical. I'm not sure I'd trust him saying the tach was reading also. If it were mine I'd try and pull codes first if I could and try a ford or ih sensor like Thomas mentioned.
Darin 99 ranger 97F250 66 fairlanes
"TheBeast"1997F2504x4dually4.10's,160k,140VIDM,HPX,4-5"dp, S366 turbo w/wicked wheel, AFE, elec. fuel,rosewood stage ones,php hydra,arp studs, comp springs, smith brothers push rods, adrenaline hpop,riffraff res,melling lpop,180 tstat,6.0 fan and IC,trucool,coolant filter,scan gauge,lots of other gauges,racer x valve body and billet converter, upgraded trans, F550 leaf springs,SD dual tensioner upgrade, cold ac mod,OBA,38gal