How To: Smoke test and find an EVAP leak in a 2003 Dodge Caravan

what he did was good,on my 03 caravan , had smoked several times nothing found , yet a small evap leak an ck engine light . also I had replaced hoses on top and under the air filter box also replaced the purge solenoid valve located near the radiator. did my self did found some bad hoses. an replaced the old purge valve with new mopar part. it been on there for 14 yrs figured wounldnt hurt to replace. but still got the small evap leak an ck engine light back on. having been smoked two different times over the years and the test point cap taken off several times apparently it leaked there. but not detected because the smokers at the garages were testing there,and then screwing the cap back on missing that part. they would still pass the car on inspection but would have the same problem the next year. so I put some gasket sealant on the threads of the little cap ,just to see if light would cut back on again ,trying to cover all bases . well no light anymore problem solved . so always have the guys smoking the car do as this guy did and pull hoses off the purge valve to test may save a head ach. thanks r bell