Hello dear people I need your help today with a Micra K11 1999 BJ 40kw engine. I have to admit that it’s the first time that I’m screwing on a Nissan but I’ve already had a lot of screwdriving experience. I don’t know about this vehicle so far and I don’t feel too deep and wanted to ask you about the topic: The said friend called that her car is rubbing at the speed and probably not really z Another friend advised you to turn on spark plugs and air filters which she had already been able to take care of, but of course I was happy to help… When opening the air filter box the first shock… I haven’t seen anything like that yet it grew a kind of moss or fungus on the air filter and it was already so that on the small sieve behind the air filter in front of the throttle clasp small parts and so far I sat out the whole air filter box I was hoping that not too much dirt came into the suction track. Spark plugs were not a big problem also looked good from something too white on the insulator as I mean but nothing world-moving. Then test drive with her and see there dropouts still there. This scratching however only at (heavy to say but I think) certain speeds and/or certain load states. Both would be more in the middle than neither at n iedrider still high speed or load but quite exactly in the middle of both. So much to the previous story now my guesses are about rather soft dropouts therefore I simply exclude the ignition frecher wisely now. What came to my mind then were injection nozzles and or false air mass values and thus false peak times. My questions now what do you mean about this like said Nissan and this product in particular are new to me. How determines the motor E injection times? Air mass? Evtl Old LMM with Poti Poti at some places in the bucket? How exactly does the engine from throttle flap have unfortunately hardly any time to look at the whole seam. Thank you for your help already