ok well my friend has a soch vtec zc engine in his hatch. we were about to pour some sea foam in his engine (while car was on) and it just spat it back out. i put my hand over the hole and there was a good bit of air coming out. ive never seen this before. i called a friend of mine and asked what that could mean and i was told it could possibly be compression escaping due to bad rings. is that the only reason this could happen or could it be something else? thanks to everyone in advance!