[gtstorey]

Originally Posted by dwaynemartins

Is this something I should be able to validate myself, with a kit like this?
https://www.amazon.com/YUAN-Universa...NrPXRydWU&th=1

Or something I should bring to a shop to test and validate for me?

I have one of those kits and they can be a help but the results can often be open to interpretation. If it leaks down, is it because of a leak in the system or is it a leak in the tool setup? Of course that will depend on how much of a leak it is.

If you do take it to a shop, don't take it to the one that replaced the thermostat for a P0420 which is a catalytic converter code and a "flush" to get rid of "unburned fuel, carbon etc".