Quote:
Originally Posted by renoir408
After 3 months of headaches and a lot of expenses (BMW Spark Plugs, Injectors test bench, Injectors index 12, BMW Coil Pack, Walnut blasting, Oil changes, VANOS solenoids clean, Boost Solenoids, Vacuum lines), with no effect, I finally solved this problem of rough idle and exhaust pops.
I set up the BMW Bosh spark plugs gap to 0,9mm and like a miracle everything works well. Any misfires at high turns and stable idle at 650rpm w/o air conditioner and 700rpm with. Maybe this is a very high gap for the plugs, but it works like a charm.
I hope it can help others with the same issue.
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You gapped the OEM 3 prong Bosch plugs?