Thread: P0300-P0306
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      08-10-2020, 02:19 PM   #6
drocket77
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Drives: 2004 BMW Z4
Join Date: Nov 2019
Location: Delaware

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So far the things I have installed havent fixed it, but, hey at least I have new parts on it. I Just installed new coil packs on all of the cylinders., and it still has the random misfire. It did feel a bit more responsive, but that could just be placebo, or I may also need to reset adaptations again...

Below is the freeze frame on #5. I have also put 93 octane this time, and made sure I ran it pretty low before refill(had 91 last time)




My next step is to test the fuel system. I think the easiest to start with would be pressure testing it, and then get reading off of fuel sender and check filter. I don't wanna mess with the injectors just yet, as this is probably going to be a PIA and the most expensive thing compared to the other parts.

I really an leaning more towards Fuel/Air issue, and may even have to purchase the OEM airbox and intake tubing. (CAI is on it now)
Appreciate 0