[Tpriest7893]

Originally Posted by nagooyin

i have a 102k fbo 2014 bmw 435i that i just got misfires on. read on forums that it could be the spark plugs or ignition coils. i upgraded to ngk spark plugs 2k miles ago so couldn't be it. so i narrowed down to either ignition coils or a bad fuel injector. i just replaced all 6 ignition coils and still having a p0302 misfire code in cylinder 2. so most likely will be a bad injector. anyone have experience?

Did you have any issues before the upgraded sparks? A lot of people have issues with different plugs as well.

[nagooyin]

Originally Posted by Tpriest7893

Did you have any issues before the upgraded sparks? A lot of people have issues with different plugs as well.

no i haven't i replaced the sparkplugs to the ngk colder plugs since i just got tuned and it was recommended to since i was going on a custom 93 tune from caryjordan.

[SlowF30]

My experience is pretty similar to yours. Between 65-75k my ofhg started leaking and was replaced. Now the valve cover gasket is leaking and about to be replaced as well with close to 80K miles. These seem to be a couple of the common maintenance items on our cars.

[Tpriest7893]

Yeah I love my bmw but it's been a pain, unsure if I'll get another one after this

[thejeremyman9]

Originally Posted by Tpriest7893

Yes that is the pipe and damm that would of been great. They started already so it's all good I appreciate the offer

Should have used this opportunity to get a mst v2 inlet

Originally Posted by nagooyin

no i haven't i replaced the sparkplugs to the ngk colder plugs since i just got tuned and it was recommended to since i was going on a custom 93 tune from caryjordan.

If the problem happened after installing the NGKs, it could be the plug. They don't work well in some cars. Recommend OEM bosch plugs with stock gap unless you specifically have issues. Also, there were fake NGKs floating around, so hopefully you got them from a reputable source.