Quote:
Originally Posted by mikelord7
Thanks. Just bought a real scanner so will see once delivered. I have a feeling is gonna be another cylinder 2 misfire which i just fixed with a new coil.
Anyone had issues w misfires only once boost is above stock? I won’t throw a CEL under full load unless the jb4 is warmed up. Stock is fine but i want the power!
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often. And is was always something new.
- sparkplug, coil pack : those are easy to diagnostic since you can swap them.
- sparkplug gap and/or temperature rating
- sparkplug coated in oil : classic bmw
- injector : classic when you have index1 to 10
- fuel : hpfp early gen fail pretty fast
- carbon built (valve can't close properly because of carbon built.)
- tune
- I saw someone reported that O2 can cause this because a bad reading and bad a/f ratio
- piston ring
a scan tool (proper bmw one) will guide you.