So recently I took apart my car. Took the valve cover off and the intake manifold. Put it all back to gether. When I started it, it idled at 4000rpms. The check engine light came on so I ran the code which was P0508 which came up as AIC low. Went to schucks and they told me that I had a vacum leak. I checked all the vacum lines and did test with some soapy water and I got nothing. I have no clue what's wrong with it or where to even look to fix now that I already checked all those things. I miss driving my car.

Please HELP!

 

Why did you test it with soapy water? You need to get a can of carb cleaner, and go over all the vacumn lines and spray them all with the carb cleaner, if your idle changes, you found the leak