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Re: Smog check required on 2021 F350 6.7lL Diesel truck?
Posted to Emissions Forum on 2/24/2023 1 Reply

If you have to smog it , it is just plugging OBD2 tester to verify that no codes are present . Dont know about gas cap on diesels . I think the reason to test is to catch the tuning chips .Also , diesels are full of exhaust emission gadgets , when something go... Login to read more.

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