looks like to me your head bolts was'nt torque down tight or it might have got loosen little ,try pushing the piston back and forth to check if they wiggle if they dont its cool...i have had this same problem before and i was going threw hell trying to find why was'nt i getting good compression reading on the 4th cylinder

check everything from sparks/wire ect. everything was a O.K then finding out my dumb butthead buddy didnt torque down my heads bolts cause he was in a rush.so remember to take your time or youll end up spending way to much money,adding up to where you could of just swap in a way better engine(4age)

but yeah check those and how much miles do you have on it anyways?