| 摘要 |
An apparatus and method for detecting cylinder leaks in an internal combustion engine includes a hose having an end configured for communication with a spark plug hole connecting to a cylinder to be tested and an end for attachment to a source of pressurized gas. Flow of pressurized gas into the cylinder is limited to the maximum amount of allowable gas leakage from the cylinder. The hose end configured for communication with the spark plug hole includes a resilient stopper sized to seal the end of the hose with respect to the spark plug hole when manually pressed into and held in the spark plug hole. If gas pressure builds up in the cylinder against the stopper during limited gas flow into the cylinder, leakage from the cylinder is below the allowed maximum leakage. Lack of gas pressure build-up indicates excessive cylinder leakage.
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