Where do I look for PO 442 EVAP Emissions Control System Leak small on 2000 Lincoln Town Car

I don't know where to look for a small leak PO442?

Asked by for the 2000 Lincoln Town Car
ck the gas cap o ring for cracks or flatened seal. repl if orignal its a very cheap guess
Agree with greg but use oe part!
1 more answer
Have the system smoked by a mechanic not expensive!