[LordVader]

Hello all...

I have a 96 T-10 with the W code 4.3 and Im getting code P0446. The truck has been running fine with the light on until about a week ago. It did not want to start after sitting overnight or at work all day. Once I do get it started, it runs fine and restarts are normal.

Doing some checking on the code, it comes up as "EVAP Emmision control system Vent Circuit malfunction"

I have read that there is some sort of valve that gets clogged but I cannot get anything more specific

Can someone shed a little light on this for me please? It would be greatly appreciated...