Car is lumpy on tick over, its missing and spluttering under load up untill 3k when the secondaries kick in, then it pulls like it should. the car has ffsh had a mini service since i bought it, but the plugs were not changed. it has been a bit funny starting once or twice over the last few month, i thought it will because i havnt changed the plugs, but with the new problems, im thinking maybe the maf ?

Any ideas/advice greatfully recieved