power slump

my 75 cdt runs fine however when i go to pull away it seems that its a bit slow and slochy and doesnt seem to want to go anywhere, it does suddenly decide to go after a short while and it runs fine once it get into 3rd/4th ive cleaned the egr byt doesnt seem to have solved the problem, is it a common problem that i just have to put up with or is there a simple fix?

cheers