every now and again i get a dip in power at about 5000rpm and then it pick back up ive had it scaned but there was no falts to show any resion for this .I have a rattle cam chain when its started from cold but its getting worse as it now happens just after i change gear at about 2-3000rpm ? im getting the oil pressure checked but would this cause the power drop as mine is an amk engine with vvt OR IS THIS RATTLE SOMTHING ELSE ?
