Cirrus V6-2.5L VIN H (1995)
Intake Manifold: Testing and Inspection
LEAKAGE DIAGNOSIS
An intake manifold air leak is characterized by lower than normal manifold vacuum. Also, one or more cylinders may not be functioning.
WARNING: USE EXTREME CAUTION WHEN THE ENGINE IS OPERATING. DO NOT STAND IN A DIRECT LINE WITH THE
FAN. DO NOT PUT YOUR HANDS NEAR THE PULLEYS, BELTS OR THE FAN. DO NOT WEAR LOOSE CLOTHING.
1. Start the engine.
2. Spray a small stream of water (Spray Bottle) at the suspected leak area.
3. If a change in RPM'S, the area of the suspected leak has been found.
4. Repair as required.
GENERAL INSPECTION
Check for:
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Damage and cracks of each section.
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Clogged water passages in end crossovers (if equipped).
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Check for cylinder head mounting surface distortion using a straightedge and thickness gauge.
CLEANING
Remove the gasket material from the manifold surfaces. Be careful not to gouge or scratch the sealing surface.