Cylinder-To-Cylinder Leakage Test
WARNING: This page is about a different car, the 2024 Jeep Grand Cherokee L. However, it is still accessible from the selected car via links, so may be relevant.
To determine if an engine cylinder head gasket is leaking between adjacent cylinders, follow the procedures in CYLINDER COMPRESSION TEST . An engine cylinder head gasket leaking between adjacent cylinders will result in approximately a 50 - 70% reduction in compression pressure.