7. Intake Restriction: Purpose: Notes
WARNING: This page is about a different car, the 2009 Ford RV Cutaway, 2009 Ford Econoline, 2009 Ford E450 Super Duty, and 2009 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
This purpose of this test is verify an air intake or exhaust restriction is not contributing to a low power condition. If the engine does have a high air intake restriction, a considerable amount of black or blue smoke may be produced.