i've got an odd miss fire...
i've got a HR31 with an rb25, rb25 loom, powerfc and z32 afm.
over the past few days the missing has gotten worse, it happens more often in low rpm/cruising speeds (~2-3000rpm in third/fourth) but then if i drop back a gear or too and accelerate, 99% of the time its fine (might have the odd miss here or there) but it sounds like its running on 5 cylinders.
i've tried new plugs gapped to 0.8mm, still missed, so i took them out, cleaned them and gapped them to 0.6mm, still exactly the same.
after that i took out the AFM, it looked a little bit oily so i sprayed it with some wax and grease remover.
i also wrapped the coils with electrical tape, and put on a new air filter.
it seemed to get a little bit better after that, but is still there.
should i clean the AFM with something else?
i have a set of RB26 coils here i'm going to try, but being a low rpm miss i'm not too confident.