You need to check the fuel pump, power to the fuel pump, fuel filter and anything else that might be related.
Top of the throttle body
The standard fuel pressure for a 1998 Chevy 3500 with a 454 engine is 50 PSI. If fuel pressure drops much below this level, the fuel injectors will not work properly.
12 to 14 pounds ?
34 Gallons
It's in the fuel tank.
headers ,, k&n filter to start and a free flow muffler
On a 1990 Chevy 3500 with a 454 engine, the fuel filter is typically located along the frame rail, near the fuel tank. It's usually mounted on the driver's side, just before the fuel line routes to the engine. To access it, you may need to raise the vehicle for better visibility and reach. Always ensure to relieve fuel pressure before attempting to replace the filter.
Gm vehicles do not use ineria/reset switches.
9 to 13 LBS. No higher are lower are you will have problems.
Either a bad relay, stopped up fuel filter, or fuel pump going bad.
A timing CHAIN
7,000 lbs