engine dises after 4700rpm usually goes to 5700 with eas until recently, sometimes makes some strange chugging noises
changed my injectors and that sorta helped the problem
is it my fuel filter?

could b spark plugs, plug leads

oh changed the sparkplug mans got them mixed up with injectors

well could be the injectors then

does it starve for fuel or breakdown and jerk at high RPM?
if you changed injectors why didn't you replace the fuel filter at the same time :nuts:
a partly blocked filter could restrict fuel at high rpm and would be the first thing i checked and replaced after the air filter.
like meh said it could be a breakdown in spark at the higher rpm.
could also be a loss of compression from a blown headgasket or cracked head. (if it's been doing it for a while look for rust on the spark plug ends and constant bubbling in the radiator)

have fun :badgrin: