Ford — Fuel Pump Pressure Test
Testing & diagnosis
From a Ford service manual — check it applies to your exact model before use.
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Before you start
- Use care to prevent combustion due to fuel spillage
Procedure
- Run the engine at normal operating temperature at idle speed.
- Remove the air cleaner assembly. Disconnect the fuel inlet line or the fuel filter at the carburetor.
- Connect pressure gauge, restrictor and flexible hose between the fuel filter and carburetor.
- Operate the engine at the specified idle rpm and vent the system into the container by opening the hose restrictor momentarily.
- Close the hose restrictor, allow the pressure to stabilize, and note the reading.
- If pressure is not within specifications the pump is worn or damaged and should be replaced.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Pump Delivery Pressure 0.24-0.38 Bar (3.5-5.5 psi)
- Smallest passage in test flow circuit must not be smaller than 5.59 mm (0.220 in)
Source: Ford service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.