Removal Procedure
WARNING: This page is about a different car, the 2003 GMC Savana and 2003 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.
- Remove the lower intake manifold. Refer to Intake Manifold Replacement - Lower .
- Remove the valve rocker arms and the valve pushrods. Refer to Valve Rocker Arm and Push Rod Replacement .
Important: Place the components in a rack so that the components can be reinstalled to their original location.
- Remove the bolts and valve lifter pushrod guide.
Important: Place the valve lifters in the rack in the upright position in order to maintain the oil inside the valve lifters.
- Remove the valve lifters.
Important: Some valve lifters may be stuck in the valve lifter bores because of gum or varnish deposits and may require the use of J 3049-A for removal.
- Use the J 3049-A in order to remove the stuck valve lifters.
- Use a cleaning solvent and a shop towel to clean any varnish from the valve lifter bores.
- Inspect the valve lifter bores for excessive wear or scoring. Replace the engine block if there is excessive wear or deep scoring.
- Inspect the camshaft for wear or damage. If the wear is questionable remove the camshaft and inspect. Refer to Camshaft and Bearings Cleaning and Inspection .
- Clean and inspect the valve lifters and the valve pushrod guide. Refer to Valve Lifters and Guides Cleaning and Inspection .