3. Intake/Exhaust Restriction: Purpose:
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2007 Ford RV Cutaway, 2007 Ford Pickup, 2007 Ford F550 Super Duty, 2007 Ford F450 Super Duty, and 2007 Ford Econoline. However, it is still accessible from the selected car via links, so may be relevant.
This purpose of this test is to determine if an air intake or exhaust restriction is contributing to a no start or hard start condition. If the engine starts with a high air intake or exhaust restriction, a considerable amount of black/blue smoke is produced.
Intake/Exhaust Restriction
- Inspect the air filter and inlet ducts.
- Inspect the exhaust system.
- Check for illumination of the air filter restriction indicator (F-Super Duty).
| Method | Check |
|---|---|
| Visual |