ok so i swapped out my engine that i had in my civic bofore to a stock d15b7 got it in and the 3rd cylinder was dead. after a bunch of headaches pulled the head off to discover one of the valves were burnt. so i put my v-tec head from the other engine and put it onn. i swaped back computers, and now my number 1 cylinder is supper weak.

i swapped plugs and injectors in the engine and still that same cylinder wasnt runnin up to speed. if i pull the wire when its running it doesnt change hardly at all till i try to move it with the wire off, it dies. with the wire on it will move fine.

i was thinking maybe i have a messed up valve agian. and it idles around 2k. and i have messed with the timing and everything.

if someone could help me out it would be much appriciated!!

 

welcome to the forum. If you take your oil fill cap off and see if you have a lot of blow by coming out, your #1 piston rings could be worn,scored,bad. With your engine off and cool, #1 cylinder at top dead center, spark plug out, put a shop vac blow side to the tail pipe and listen or see if you can hear, see air coming out of the spark plug hole this would indicate if exhaust valve is leaking,, same for intake, by blowing air into the induction. might be noisy, you can blow smoke into the intake and watch if blow out.