Ford Crown Victoria intake manifold leak issue around cylinders 5 and 8, avoid Dorman part on Ford Crown Victoria

Some Ford Crown Victoria owners report experiencing intake manifold leaks around cylinders 5 and 8, which is a common issue with these vehicles. These leaks are often found on the rear driver side of the intake manifold and can be exacerbated by a blocked coolant passage in the cylinder head near the firewall. Additionally, some owners have encountered cracks in the intake manifold where the upper radiator hose connects, leading to coolant leaks and potential misfires in specific cylinders. In certain cases, cracks may also develop at the thermostat area, particularly in models with a plastic layer beneath the metal crossover that can degrade over time. It is also noted that using Dorman parts for repairs may not yield the best long-term solutions. Owners are advised to thoroughly inspect the mentioned areas to accurately identify and address the source of the leak to prevent further complications.