Instructions for DIY smoke testing a 2002 EVAP system
Removed a section of bad evap hose going from the charcoal canister to the fuel tank and replaced the bad section with fresh fuel line and a barbed brass fitting to tie the two pieces of hose together. Thought I had the problem fixed, but got back my P0455, although the P0442 code seems to be gone. I'd like to smoke test it now to see if I can find why I'm still getting the P0455 code. I built my own smoke unit from an idea I found on the Internet. I'm using mineral oil to create the smoke and an aquarium air pump (small one) to generate a low pressure smoke flow. I've read that you should use nitrogen, but have also found commercial units that use shop air for EVAP testing. Can't see where shop air would cause a problem as the EVAP system itself uses a vacuum operated air pump to pressurize the system for initial testing. Can anyone provide a write up for doing the smoke at home using basic equipment, with no fancy factory scan tool being used? If it had pictures so much the better. Any and all suggestions and comments are welcomed and appreciated.
To those who are saying to get fuel line from the parts store, do you have a list of diameters needed? How much of each size did you buy? I've lowered the cage holding the evap unit per the manual, what does removing the bumper buy you?