Product Detail

Petrol Engine Compression Test Set

Product Name: Petrol Engine Compression Test Set
Product Number: MG50184

General Info.

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Petrol Engine Compression Test Set   Detailed Descriptions,
Petrol Engine Compression Test Set

Thread Chasers - M10. M12. M14. M18
For use on engines with deep seated plug ports with difficult access
Built-in pressure relief valve enables repeat tests without dismantling

Engine Cylinder Compression Test
An engine depends on an equal amount of compression in each cylinder to operate smoothly. If poor compression exists in one or more cylinders it can cause a rough idle condition and low power. A compression test can be performed to diagnose the cause of a low cylinder, such as wear or internal damage. A compression gauge is needed to test the engine cylinders since the pressures are in excess of 100 psi. 

If low compression exists, further disassembly and inspection will be required to find the cause. Possible causes for a low compression condition are: burned intake or exhaust valve, broken piston or piston ring, broken valve spring or a blown head gasket
There are two types of gauge styles, one threads into the spark plug hole which is more accurate. The other style of gauge is constructed with a rubber plug that is designed to be pressed against the spark plug hole, this style of gauge is difficult to use and may not be accurate.

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