What can i do to fix my honda fast to past emissions?

Marco Rodrigues

New member
been parked for a year and wen i started to run it the check engine light came on so i took it to get new inspection but it failed emissions so i put all new parts in it such as a new egr valve and gasket, new head gasket, new downstream o2 sensor and upstream. and the check engine light still comes on in the car i need to be able to pass the emissions test.
 
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