Have a 99' with 130,xxx having a problem finding a vaccum leak.. I have replaced the leak detection pump bc I had a code for that.. now i have a small vac leak if i erase the code sometimes it comes back as evap gross leak/ no flow. So have changed all rubber 90's checked all lines to cannister, fuel tank, and changed filler neck and gas caps. sprayed starting fluid wherever i could get it and nothing reved the engine up. other suggestions before i take it to the stealership?

 

awesome thread for me to watch im having the same problem code no luck finding a solution

 

The only other thing I can figure it might be is poss a o ring for the fuel pump....idk its driving me crazy. I Have an appt on mon for a smoke test see what they find.

 

Find a shop with a smoke machine. They can hook it up and find the leak in no time, that is better than throwing parts at it.

 

I know you said you checked the gas cap. But is it going on all the way? I had one that clicked befor it was really on all the way.