Vehicles using AEM engine list:

Engine AEM in the Audi A8 4.2 V8 (1994–1999) commonly faces issues like oil leaks from valve cover gaskets and timing chain tensioner wear. Diagnosis involves checking for oil spots under the car and listening for rattling noises at startup. Prevent oil leaks by regularly inspecting and replacing gaskets as needed. Timing chain tensioner problems can be prevented with timely oil changes using high-quality oil to ensure proper lubrication. If tensioner failure occurs, replace the tensioner and inspect the chain for stretch or damage. Regular maintenance and prompt attention to leaks or unusual noises will help maintain engine reliability.