Mi16 Possible Misfire @ Around 4000rpm

[Guest robyp25]

hi guys, with my toe down at about 4000rpm there is a misfire or kinda struggle, before and after 4000revs the car runs like a dream any ideas? the car has had new plugs, leads, dizzy and rotor about 400 miles ago, the problem developed about 25 miles ago and got worse with time. thanks robyp

[wracing 19]

ignition driver/amp, do a search it occurs quite a bit, make sure you replace with a know good one or a quality replacement as some new items are poor

 

James