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Home›Repair guides›Ford›Oil Pressure Test

Ford 2.3 / LRG-423 — Oil Pressure Test

Testing & diagnosis

For the Ford 2.3 / LRG-423, from the Ford service manual.

Applies to: Ford LRG-423 engine

Procedure

  1. Disconnect and remove the oil pressure sensor from the engine.
  2. Connect an Engine Oil Pressure Gauge T73L-6600-A and Transmission Test Adapter D87C-77000-A to the oil pressure sensor screw port.
  3. Run the engine until normal operating temperature is reached.
  4. Run the engine at 3,000 rpm and record the gauge reading.

Tools required

  • Engine Oil Pressure Gauge T73L-6600-A Amazon
  • Transmission Test Adapter D87C-77000-A Amazon

Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.

Specs & values

  • 250-490 kPa (36-71 psi) at 3,000 rpm

Full service-parts list: Ford LRG-423 engine →

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.

More Ford repair guides →