i have change the cams chain with new original and the oil regulator valve for this gain and all its ok,but this vibration is 3500-4000rpm with neutral gear and with all gears:down::down::down::down::down:
nothing ,nothing ,nothing,i have problem with engine vibration 3500-4000rpm,i have checked all parts,all mounts,all,all,all, ,in,out ,down,up in this car and all are ok and the problem is problem,i hate very much thats rpms about 3500-4000.
try to change your old oil filter with other with elastick silicone extra valve arround holes inside filter,for keeping the engine oil inside when you start up your engine again
i have checked all mounts and are all ok,the vibration ploblem is again 3500-4000 rpm,i have checked all body parts and are ok.I dont know what else is this vibration problem and why this is 3500-4000 rpm ?