What Are Some Common Issues With Ford Cylinder Heads?

What Are Some Common Issues With Ford Cylinder Heads?

The most common problem with Ford cylinder heads is spark plug ejection from the cylinders of its V-8 engines, according to Repair Pal. The next most common problem is rough running and engine noise caused by a loose valve seat in the engine cylinders of the Ford Escort.

Repair Pal lists 49 instances of ejected spark plugs from Ford F-150 cylinder heads on the company website. Ford published a technical service bulletin regarding the plugs in 2008, admitting that they are at fault and offering owners an 11-page manual of instructions on how to remove and replace the plugs. A class action lawsuit has been filed against the company as a result of the defective spark plugs. Affected models include Ford Mustangs manufactured between 2005 and 2008, Ford F-150s manufactured between 2004-2008, Ford Expeditions manufactured between 2005-2008 and Lincoln Navigators manufactured between 2005-2008.

Owners of Ford Escort engines often report a straining noise coming from the vehicle's engine as a result of loose valve seats. Valve seats are the components of the cylinder head that help seal the valve, providing a safe, tight fit. Loose valve seats damage the engine, requiring Ford owners to replace the entire cylinder head to resolve the problem.