So among the leaks of gases and fluid I've been chasing, one is of course vacuum. I've been trying to track it down with propane, no luck. Figured I'd try brake fluid bc why not at this point. I didn't get any results in terms of hearing the engine bog down but I did see bubbling at the seam with the arrow when I sprayed a bit too much by accident. Didn't bog the engine but could this be my problem? I assume there is a gasket in there that has failed but it doesn't appear that that is available as its own part. Is there something I can block off in the short term without doing a full delete (I will do sometime soon)? Ball bearings in a small hose or cap a larger one? Something like that?