7. Intake Restriction: Purpose:: Notes
WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2004 Ford RV Cutaway, 2004 Ford Pickup, 2004 Ford F550 Super Duty, 2004 Ford F450 Super Duty, and 2004 Ford Excursion. 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.