Let’s start by installing a fuel-pressure gauge on the Schrader valve on the passenger-side fuel rail, near the rear of the engine (Image A). When the key is turned to the Run position, ...

When fuel delivery issues developed with our 1976 Firebird we decided that a high-quality fuel pressure gauge was the only way to determine the condition of its mechanical fuel pump.

When fuel pump problems arise, and before moving to replace the fuel pump, attach a fuel pressure gauge to the Schrader port of your EFI system to check the pressure. Modern cars should see a rock ...