redfly

for months and months i have had a occasional miss fire on my ek3 civic, it will run fine for days then all of a sudden a few days of kangaroo in down the road. I have changed plugs, leads, cap rotar arm, new oil n filter, engine flush no luck still there. i have taken it to garages and honda, because the engine management lights not coming on they cant do any thing. Any ideas what it could be its a standard 1.5 lsi engine other than a kn panel filter.

please please please