Ok finally getting the new lr3 up to speed. Last thing is a P0455 code. I have the "gas cap loose" message as well. Previous owner said hes replaced the cap. I bought another just in case. I know the best way to find the leak is with a smoke test. I called a couple indy shops and they want $180/hr to smoke test. That seems ridiculous. Is there anyway to do the smoke test at home. Ive seen plenty of youtube videos on making a smoke machine with a paint can. Thoughts?