LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Ford >> 1990 >> RV Cutaway 5.8 H, C6 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Fuel Control Checks >> Fuel Injectors
October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.

Fuel Injectors

  1. Connect tachometer to engine. Run engine at idle. Disconnect and reconnect injectors individually. Each time an injector is disconnected should cause a momentary drop in engine speed (at least 100 RPM).
  2. RPM drop should only be momentary because ISC motor should correct idle RPM. Replace any injectors that DO NOT cause specified RPM drop.
scientia non olet · About LEMON Manuals