Fuel Pump
Make all tests at idle RPM. Pinch off fuel return line (if equipped). Connect pressure gauge to fuel line at carburetor and hold gauge at carburetor level.
Fuel Pump Specifications
| Pressure At Idle | ||
| 4.3L (265") & 4.9L (301") 4-Bbl | 7.0-8.5 psi | |
| 6.0L (368") DFI (Electric) | 12.0-14.0 psi | |
| All Other Engines | 7.5-9.0 psi | |
| Volume (At Idle) | ||
| All Models | One pint in 30 seconds | |