hello have already read a little here in the forum. but unfortunately did not bring any further. ride a mv6 build year 1999 with 211 ps and has now 200000 km down. in the stand he runs quietly. in the stand gas giving noticed a slight jerking. while driving he runs on like on 4 cylinders with little power. at about 4000 turns you notice that now all cylinders run but there also with leechers. fzg has already been 20000km when starting off and too lightly jerked me but never disturbed at the first fail query with such an ebay plug and laptop was only error code 31 in it (normal fzg from) according to forum some works performed candles checked if there is oil – ok other spark plug on the ignition cable made all 6 sparks new bosch candles installed compression tested all over 11 bar other ignition cables that had a known still had installed instructor had another lying petrol filter renewed since 30000km and did not know when the already new came underdruc hoses tested on seat- ok short-term error in empty run filling regulator voltage too low.Determines the underpressure cover the screw to the suction bridge the screw was broken- with 2k glue re-fixed and sealed. error still since now in the error query comes error code 165 unknown has someone an idea what to do next? 😥 gruss from northern Hesse