LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Ford >> 1994 >> Explorer 4D Utility, RWD, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 17 (Engine Controls - System/Component Tests) >> Fuel System >> Fuel Control >> Fuel Injectors
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Fuel Injectors

WARNING: This page is about a different car, the 1994 Ford Ranger. However, it is still accessible from the selected car via links, so may be relevant.
  1. Connect tachometer to engine. Run engine at idle. Disconnect and reconnect injectors individually. If each injector causes a momentary drop in engine speed of at least 100 RPM, injectors are giving proper fuel delivery. RPM drop should only be momentary as IAC will attempt to re-establish correct idle RPM.
  2. Replace any injectors that do not cause sufficient drop in engine speed. When test is complete and all injectors cause equal drop in speed, shut off engine. In order to check curb idle, refer to emission control specifications on decal in engine compartment.
scientia non olet · About LEMON Manuals