puristustestiin

Puristustestiin, often translated as "compression test" in English, is a diagnostic procedure used for internal combustion engines. It involves measuring the pressure within each cylinder of an engine when the piston is at the top of its compression stroke. This test is a crucial tool for assessing the mechanical health of an engine.

The procedure typically involves removing the spark plugs from each cylinder. Then, a specialized gauge with a rubber adapter is inserted into the spark plug hole. The engine is then cranked over a few times, with the throttle held wide open to allow maximum airflow into the cylinders. This cranking action causes the piston to move up and down, compressing the air-fuel mixture (or just air in some diesel engines) within the cylinder. The compression gauge then registers the peak pressure achieved.

A puristustestiin helps identify potential problems such as worn piston rings, leaking valves, or a blown head gasket. If one cylinder shows significantly lower compression than the others, it indicates a problem within that specific cylinder. Comparing the readings between cylinders can also reveal issues. A significant difference between adjacent cylinders, for example, might suggest a head gasket failure between them. Consistent, low readings across all cylinders could point to general engine wear. Technicians use the results of a puristustestiin to decide on the next steps for engine repair or maintenance.