What should be checked during the intake manifold inspection?

• A. Check intake manifold and connections for issues
• B. Piston rings
• C. Clutch alignment
• D. Wheel alignment

Answer: (A)

During an intake manifold inspection, the main focus is on the manifold itself and all connections feeding into it. The goal is to find any cracks, warping, or gasket failures that could cause vacuum leaks or an improper air–fuel mixture. Look for physical damage to the manifold, signs of heat or chemical damage, and a clean, undamaged mating surface to the cylinder head. Inspect the intake gasket for deterioration and leaks, and verify that all fasteners are present and torqued to spec. Check that clamps, hoses, and vacuum lines connected to the manifold are secure and free of cracks or disconnections. If you detect a vacuum leak, symptoms like rough idle, stalling, or fluctuating idle point you to the leak path and you can test further, for example with a spray test. Other items like piston rings, clutch alignment, or wheel alignment aren’t part of the intake manifold inspection, as they relate to different systems entirely.