Dakota 2WD V6-3.9L VIN X (1997)
Intake Manifold: Testing and Inspection
WARNING: Use extreme caution when the engine is operating. do not put your hands near the pulleys, belts or the fan. do not wear loose
clothing.
LOW MANIFOLD VACUUM
An intake manifold leak is characterized by lower than normal manifold vacuum. Also, one or more cylinder may not be functioning.
PROCEDURE
1. Start the engine.
2. Spray a small stream of water on the suspect area.
3. If there is a change in RPM the suspected leak has been found.
4. Repair as required.
