no misfire on normal use, but i dont really get up to 4k when driving it normally, its ok when you start it from cold, seems fine, sometimes a bit bubbly on idle but i havent started it for a while now due to the problem it has (been sitting for about 2-3 weeks ive just been waiting until i have time to sort it and now im off work for a while so can start to look for someone to get working on it)

when its warmed up and go to give it some, it goes back on itself around 4k revs and anything above that really

if i take the cap off the header tank after its cooled down, should it release quite a bit of pressure? is this normal?

it seems like its using water as i have put quite a bit in it