Heavy smoke leaks from lid edges and door seams instead of chimney

Safety first: Work on the lid only when the grill is cool.

• Inspect gasket: Open the lid and examine the gasket around the cook chamber. Look for flat, cracked, or missing sections.
• Check lid alignment: Verify that the lid closes evenly on all sides. Adjust hinge bolts to center the lid if needed.
• Replace gasket: Remove old gasket material and adhesive. Clean the surface with a degreaser. Install new Nexgrill high‑temp gasket, pressing firmly along the entire length. Allow adhesive to cure per instructions.
• Test seal: Close the lid and run the grill at a moderate temperature. Observe smoke path; minor wisps are normal, but heavy leakage should be reduced.