LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Cadillac >> 2007 >> Escalade EXT >> Repair and Diagnosis >> External Pages >> Different car >> Section 1687 (Engine Control System & Fuel System - 4.3L - Description And Operation) >> Description and Operation >> Fuel System Description >> On-Board Refueling Vapor Recovery System (ORVR)
April 5, 2026: LEMON Manuals is launched! Read the announcement.

On-Board Refueling Vapor Recovery System (ORVR)

WARNING: This page is about a different car, the 2010 GMC Sierra and 2010 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

The On-Board Refueling Vapor Recovery System (ORVR) is an on-board vehicle system designed to recover fuel vapors during the vehicle refueling operation. The flow of liquid fuel down the fuel filler pipe provides a liquid seal which prevents vapor from leaving the fuel filler pipe. An evaporative emission (EVAP) pipe transports the fuel vapor to the EVAP canister for use by the engine.

scientia non olet · About LEMON Manuals