i have a 93 1.5 injector 2 isn't contributing this is what i did
i pulled #2 injector wire off no change all others about kill under load (foot on brake in drive)
swapped #1 and #2 injector wires problem stayed at #2
pulled plug out to watch plug firing it did
checked valve gap fine
compression same as other cylinders good
timing belt in time
i thought it was injector replaced didn't help (burn money):

another problem i assume not related it is using 1 qt oil every 400 mi not smoking or no signs of dripping i must be blind

thanks for your help

 

fixed thanks to help from my postings on a few civic sites
it was a crack in the spark plug wire grounding to the spark plug tube