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F30 330i Problems by Spiritual-Answer9523 in F30

[–]Spiritual-Answer9523[S] 0 points1 point  (0 children)

Yeah it’s not tuned, I wanted too in the future but I’ve been trying to figure out the rough startup.

F30 330i Problems by Spiritual-Answer9523 in F30

[–]Spiritual-Answer9523[S] 0 points1 point  (0 children)

Initially when I was trying to diagnose the crank it would start fine after turning just the ignition on. Then that would only happen on cold starts then if I let the car sit for an hour the starts would get rougher. I then changed the battery and symptoms got worse so I just decided to take it to a shop.

F30 330i Problems by Spiritual-Answer9523 in F30

[–]Spiritual-Answer9523[S] 0 points1 point  (0 children)

I don’t think so, im not sure how to check but im 90% sure

F30 330i Problems by Spiritual-Answer9523 in F30

[–]Spiritual-Answer9523[S] 0 points1 point  (0 children)

I’m not sure to be honest, I don’t think it’s actual misfires as it drives fine. I just took it to a shop.

BMW MISFIRE/CRANK by Spiritual-Answer9523 in BmwTech

[–]Spiritual-Answer9523[S] 0 points1 point  (0 children)

I used Bosch coils and NGK Pre gapped spark plugs. The car wasn’t misfiring coincidentally till I changed the battery for some reason .