Cylinder-To-Cylinder Leakage Test
WARNING: This page is about a different car, the 2015 Fiat 500. 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 the cylinders located next to each other, follow the procedures in Cylinder Compression Pressure Test. Refer to CYLINDER COMPRESSION TEST . An engine cylinder head gasket leaking between the cylinders will result in approximately a 50 - 70% reduction in compression pressure.