Timing Chain and Sprockets Cleaning and Inspection
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2004 Oldsmobile Bravada, 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 GMC Envoy, and 2004 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
- Inspect the timing chain sprockets for cracks or teeth that are worn, broken, or chipped.
- Inspect the timing chain for binding or stretching.
- Inspect the dowel pins for wear or damage
- Inspect the crankshaft sprocket keyway and the locating dowel pins in the crankshaft for damage.
- Inspect the timing chain shoe and guide for excessive wear or cracks.
- Inspect the timing chain tensioner for damage.
- Replace the timing chain and sprockets if damaged.