CHEVROLET FUEL PRESSURE REGULATOR

I Have A 2000 S-10 Zr2 4.3 V6 Auto, My Problem Is It Seems To Be Running Out Of Fuel At About 3000rpm Under Load And Around 3800 In Neutral...

Fuel Pressure Regulator Was Leaking Fuel Out Of The Vacuum Line, So I Bought A New One After A Few Hours. The New One Did The Same Thing. I...

I Have Done All I Can Think Of. The Fuel Pump Works, I Replaced The Fuel Pressure Regulator, Had The Carburetor Rebuilt, Replaced Fuel...