ILENGINE Lawn Royalty Dec 11, 2018 #11 to get a rough idea what the actually compression is suppose to be, would requiring knowing the compression ratio of the engine. If the engine is a 7:1 engine your compression reading would be about right. But if it is a 10:1 engine then it is low.
to get a rough idea what the actually compression is suppose to be, would requiring knowing the compression ratio of the engine. If the engine is a 7:1 engine your compression reading would be about right. But if it is a 10:1 engine then it is low.
