the car has been misfire'ing ever since i got it about a year ago but never really bothered me
it misses in the low rpms only and at idle especially when the ac is on it misses like every couple of seconds.. i did a full tune up fuel filter plugs new dizzy cap rotor
it usually goes away if i change the plugs but it always comes back after a few months..
could it be a bad ecu? bad injectors? oh and i dont get any cel ever
1992 si stock motor and tranny about 220xxx miles.. maby needs a new timing belt?

 

CEL codes?

Plug wires?

Coil?

Igniter unit?

 

im sorry are the igniter and coil in the dizzy i have a new one on and no no cel

 

I think I am having the same issue with mine..

Low compression on that same cylinder I believe that is misfiring, #4. Numbers from #1-3 are about 190-210, and #4 is 150.

Plugs/wires/cap/rotor/igniter/coil are all new.

 

is there a way to tell which cylinder is missing if theres no cel?

 

Compression. Test.
Leakdown test.

 

So much fun.

 

ok well it seems like it can be a lot of things
bad ecu
bad ground
fuel injectors
piston rings
bad valves
valve adj.
headgasket
ill do a compression test and see watsup

 

You list a bunch of things you think are "solutions" and try and guess which one it might be.

 

If you think it's any of those things, have your friend test them. Half of them will be confirmed or ruled out by a compression/leakdown test.

 

Yes in the distributor. New what?

Plug wires?

Does the CEL work?

 

new distributor.. yea my cel works

 

Third attempt.

 

changin this weekend but i dont think ill be that lucky

 

You could be wrong. And in the future, please answer all questions when asked the first time rather than the third time.

Did you install an aftermarket or OEM distributor?

 

after market autozone

 

This^ is another potential problem.

 

would it narrow it down if the car misfires every couple of seconds at idle when the ac is on?

 

Replace the old plug wires and go from there.

 

Preferably with OEM Honda wires, NOT with the cheapest thing you can find at your local parts store.

 

I agree it could be a bad plug wire.
If you pulled all the spark plugs and numbered them as to what cylinder they came from and study them visually you might see a slight difference in one or two that might tell you something. If you want, pull them, mark them 1,2,3 &4 with a sharpie on the white ceramic part, take a picture of them side by side and post it in this forum. Give us something to look at. I'm bored.

 

Check spark plug wire ORDER off the cap and make sure you have them right. Check to make sure your rotor is secure. Check mechanical timing, then check ignition timing.