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Re: P0442 & P0456 - how to test this evap system?
Posted to Technical Discussion Forum on 12/4/2018

Think, fourteen year old EVAP components , rusted piping, cracked gaskets, plastic fittings and brittle hoses.

Make sure the valves can hold pressure and vacuum for extended periods.

Very small leaks for me have been easier to find with soap bubbles.

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