Fuel Leak After Shutdown - Fuel Filler to Tank Seal Replacement

Fuel Systemintermediate✓ Community Verified

Problem

Fuel leaking from the fuel tank area, specifically from the fuel filler to tank seal. The leak occurs after engine shutdown when the fuel tank pressurizes due to heat soak from the hot exhaust.

Fuel leak from fuel tank areaLeak occurs after engine shutdownLeak worsens when tank is more fullFuel smell near tank after driving

Root Cause

Worn or deteriorated fuel filler to tank seal, possibly combined with insufficiently tightened filler neck bolts. Heat from the exhaust pressurizes the tank after shutdown, forcing fuel past the failed seal.

Confidence

Moderate confidence — Multiple community members agreed on this solution

View Original Thread →Posted September 2021 on SupraForums.com