RAM 1500 Van V8-5.2L VIN Y (1999)
Intake Manifold: Testing and Inspection
INTAKE MANIFOLD DIAGNOSIS
An intake manifold leak is characterized by lower than normal manifold vacuum. Also, one or more cylinder may not be factioning.
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.
1. Start the engine allowing it to warm up.
2. Inspect for disconnected vacuum hoses or hardened or cracked vacuum lines.
3. With a spray bottle, spray a small stream of water on the suspect area.
4. If there is a change in RPM'S, the suspected leak has been found.
5. Repair as required.
