Ok so my dad told me his friend could hook me up with a buff job so I took my car to his shop and then I picked it up and I noticed it was idling weird so I opened the hood and I saw they washed the engine... So then I drove it home on the way home the ck engine light kept flashing and turning off once I got home the light stayed on so I checked the code and it threw p0306 which is saying thhat cylinder 6 is misfiring. Do you think this problem will go away once the water drys or am I gonna have to do something else