Questions tagged [compression-release]

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Honda GX270 engine very high compression

I have a (previously working) Honda GX270 engine that I was transporting in my truck recently. The strap came off and it tumbled in the back. Nothing serious, but it was lying on its side for about 15-...
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How does compression release work?

Some engines, especially small engines, have compression release valves so that it's easier to turn the engine when you first start it because there is less compression in the cylinder. Examples ...
anonymous2's user avatar
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Is it ok to plug in battery backward to do compression test?

On engines with compression release valves, the recommended method for testing compression is turning the engine in reverse direction. I'm working on a lawn tractor (with a Kholer K241AQS), so there ...
anonymous2's user avatar
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