ZR 160 cutting out :(

hey guyssssss, still no found a solution for my ZR :(

the problem is and really hope some can point me in the right direction,

when i drive i third(3) speed and revs drop about 2000rpm/s,

approximately 40km and when i start to accelerate ZR start to cutting out about 2-3 sec and then speed up normaly, so far i try to changed coil pack, spark plugs, spark cable, lambda sensor, HG, coolant temp sensor but the problem is still there, any sugestion pleaseeee

all the best

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