1) First, test that your format files are defined properly and that it fits your data files by running chkform on them. You can also check that your data is being interpreted as you desire by running newform. Both chkform and newform are FreeForm tools that come with the DODS FreeForm Server distributions. (They should be located in the bin/ directory of your distribution.)
So that newform can display your data, you will need an 'ASCII_output_data' section in your format description file. Like this:
ASCII_input_data "test"
Time 1 10 double 4
Test 12 33 enote 20
ASCII_output_data "test"
Time 1 10 double 4
Test 12 33 enote 16
2) If you are serving ASCII data, pay attention to the whitespace in your data files.