99 gmc 1500 4x4 350 want start ASAP

I towed some car went out of town refueled went in walmart came back out tryed to crank it and cut off tryed it again had a ruff idle every time i hit the gas would boug down i put it in gear and baily made it to the end of the parking lot had to tow it home getting good fuel presure and test vaule on intake but if i spary strating fuild in trotole body it crany what could it be

How much fuel pressure do you have?