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View Full Version : Emission problem 535i 91 model.



grave77
09-22-2004, 06:09 PM
Dunno where to start ... I had a choking problem and it ended up with my cars fuel pump. but I had this problem before that as my CO level was too high and my cars torque is bad I also see black smoke in the morning and the exhaust is black not clean like before. when I switch my AC off the engines idling is too bad. if I lifted up the AFM to adj. the roughness, my engine takes long to start. I had my O2 sensor disconnected 6 months ago and my car was very smooth so it's not the O2 sensor. I was suspecting the injectors pressure regulator for some reason especially that when I'm driving 220Km/h the economy level is not reaching the min. as if it's telling me that not all the gas is getting in, while my M/Gal is bad !!
I had new spark plugs and distributor, I also had my injectors cleaned by fluid cleaners.
I need some advice ... and by the way the valves has been Adj. @ 0.25mm = 0.010" as on 0.012" the valves were ticking loudly.