VW Intake Manifold
Some owners of VWs & Audis have experienced performance or drivability concerns tied to faulty intake manifolds.
Aging Plastic Intake Components May Cause Leaks
BMW valve covers and intake manifolds made of plastic are susceptible to warpage and gasket failure.
VIDEO: More Plastic Underhood Components On Modern Vehicles?
Andrew Markel discusses his time at NAIAS 2019 and changes he has seen to underhood components, including intake manifolds and oil pans.
VIDEO: Oxygen Sensor Operation Modes
Andrew Markel explains the difference between closed and open loop operations, and which is more efficient.
Plastic Intake Manifolds: Checking For Leaks
Most late-model engines come factory-equipped with plastic intake manifolds. Plastic saves weight and cost, and conducts heat much more slowly than aluminum or cast iron. This helps lower the temperature of the incoming air for a denser, more powerful air/fuel mixture.