Timing Chain and Tensioner Problems

Some BMW 4 Series models, especially those with N20 and N26 turbocharged four-cylinder engines, are known for premature timing chain wear.

A worn or weakened timing chain tensioner can cause slack in the chain, leading to rattling noises, reduced performance, rough idling, and, in severe cases, catastrophic engine damage.

Common symptoms include:

• Rattling noise from the engine bay
• Loss of power
• Rough idling
• Check engine light illumination

If you notice these signs, visit Orion Automotive Service, located near you in Ann Arbor and serving nearby areas such as Chelsea, MI. We replace timing chains and tensioners with upgraded components to ensure long-term reliability.

Leaks from Valve Cover and Oil Filter Housing

BMW engines such as the B48, N20, and N55 are prone to oil leaks from the valve cover gasket and oil filter housing gasket.

Common symptoms include:

• Burning oil smell inside the cabin
• Oil spots or puddles under the car
• Low oil level warning light

Left unaddressed, oil leaks can lead to overheating and increased engine wear. Bring your BMW 4 Series to our shop in Ann Arbor, serving drivers from Dexter and Saline, MI, for a thorough inspection and gasket replacement using BMW-approved components.

Suspension and Steering Issues

A frequent suspension-related issue in the BMW 4 Series is worn front control arm bushings. These bushings help maintain proper wheel alignment and front-end stability.

When worn, they may cause:

• Steering wheel vibrations
• Clunking noises
• Uneven tire wear
• Pulling to one side while driving

Power steering fluid leaks are also common. Symptoms include:

• Whining noise when turning
• Difficulty steering
• Visible fluid beneath the vehicle

If you notice these issues, visit our Ann Arbor shop. We serve the surrounding areas, including Scio Township, MI, and provide accurate inspections and prompt repairs.