So, I posted a little while back about having an erradic idle, respones came up with faulty O2 sensor, bad ISV, injector o-rings, etc. Well, I think that I've finally narrowed it down to a vaccum leak somewhere below the distributor, which really is of little to no help
Just the past 2 days it's been making a mad hissing while the engine is on. The car hasn't been loosing any oil or coolant, so I don't think that any important hoses are leaking, and the hissing goes away when the car turns off. This pisses me off though. I haven't been able to find the leak as of yet, but I just spent about 10 min under the hood just now. First, do you think my diagnosis is right? And second, do you have any suggestions on how to find this bastard so I can fix it?