1500 4x2 Pickup V8-5.2L CNG VIN T (1996)
Intake Manifold: Testing and Inspection
An intake manifold leak is characterized by lower than normal manifold vacuum. Also, one or more cylinder may not be functioning.
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.
