For 1990-2009 cars

1. Remove the grommets.
2. Clean the lower valve rocker arm cover. Remove any sludge or other deposits.
3. Clean the lower valve rocker arm cover mating surfaces.
4. Inspect the lower valve rocker arm cover for cracks or other damage.
5. Inspect the lower valve rocker arm cover mating surfaces for damage.
6. Replace the lower valve rocker arm cover if any damage is found.
7. Inspect the grommets for damage.
8. Replace the grommets if any damage is found.
9. Install the grommets.