You want to have the engine running at idle and spay your choice of flammable spray like carb cleaner around the intake manifold. You want to listen for a idle change. The idle change could idle up or down depending on the spray used. But just listen for idle change. If idle changes then you likely have intake gasket problem. If you don’t hear an idle your intake gaskets are probably ok. So you are basically testing for vacuum leaks with this test. With this test make sure you don’t have any vacuum leaks from hoses or vacuum caps around the intake manifold because if you have other vacuum leaks the test will lead you down the wrong path.Not quite sure if I understand this test. What should I look at once sprayed?
Also just food for thought once you severely overhead any engine it effects the whole engine not just one bank. Not trying to be an ahole but your compression test numbers are really low.
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