hmmmm.. so a blown headgasket huh? i have the same prob. i've tried and tried just as much as you have on figuring out wats wrong. im not mechanically inclined to do my own headgasket and i was quoted at over 800 at a few places. in labor and in parts. more if i wanted a head job.hope somebody finds this out. i hope my little honda makes it to 200k haa...