LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lincoln >> 1987 >> Mark VII Base >> Repair and Diagnosis >> Engine Performance >> System >> Fuel Injection System - Multi-Point >> Testing >> 2.3L, 3.0L
April 5, 2026: LEMON Manuals is launched! Read the announcement.

2.3L, 3.0L

  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 ISC will attempt to reestablish proper RPM.
  2. Replace any injectors that do not cause sufficient drop in engine speed. When test is completed 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