Question

1998 Chevrolet Trailblazer 4.3L, how do I check for leaks in the EVAP purge line?

Answer 1

HI there,

This is typically done with a smoke test and smoke machine. In some cases a small hand pump will work to put pressure into the system then you can check it will soapy water for leaks. This isn't the best method though, you can damage the pressure sensor with to much pressure.