Reference to Code P0456, what is a smoke test?

Question

Assuming a very small Evac leak, P0456, if it is not a leaky fuel cap, can you explain how to perform the Smoke Test to find the leak?

Answer 1

HI there,

You need to take it to a shop with a smoke machine. They will blow smoke into the evap system and locate the leak. At that point you can try to do the repair yourself to save some money.