Timing Chain & Sprockets - Cleaning & Inspection

WARNING: This page is about a different car, the 2002 Pontiac Sunfire and 2002 Chevrolet Cavalier. However, it is still accessible from the selected car via links, so may be relevant.

Inspect the timing chain guides for cracking or wear.
Replace the timing chain guides if wear exceeds 1.12 mm (0.045 in).

Fig 1: Timing Chain Guides
Courtesy of GENERAL MOTORS CORP.
Inspect the timing chain tensioner shoe for wear.
Inspect the retaining tab for wear or damage. Replace components as necessary.
Replace the timing chain tensioner shoe if wear exceeds 1.12 mm (0.045 in).

Fig 2: Timing Chain Tensioner Shoe
Courtesy of GENERAL MOTORS CORP.
Inspect the timing chain and sprockets for wear.
Inspect the camshaft sprocket faces for signs of movement.
Inspect the alignment pin holes in the camshaft for cracking or damage.
Inspect the camshaft sprocket teeth and chain for signs of excessive wear, chipping, or seizure of the timing chain links.

Fig 3: Timing Chain
Courtesy of GENERAL MOTORS CORP.