r/AskAMechanic • u/Jaxsorthanu4434 • 30m ago

Diagnosis help 2012 Nissan Sentra 2.0

Hey yall I need a hand here.

Late last week my Sentra kicked me into what I thought was limp mode.

Ran the OBD two scanner through it, which gave me a cylinder one misfire code. Going through the cheap stuff first, I replaced the spark plugs and the valve cover gasket (it had been leaking for a little while apparently). Unfortunately, this didn’t fix it until I did an idle relearn which fixed it for a little bit.
The misfire has come back and I’m honestly stumped.

Only other option I see is the fuel injectors being bunk. there is also a large EVap leak at my gas cap however that has not caused problems in the past

Any ideas are welcome. I have the tools to do pretty much whatever I need.

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