I have a 2000 Civic si, all original B16a2 motor trans 160k
My 1999 runs better then this 2000 Si.
p1072
system too rich bank 1
spark plug replaced
ignition coil replaced
rotor button replaced
oxygen sensor bank 1 replaced
tested the injectors ... they're fine

the car runs like a diesel truck... im devastated...

could this be the catalytic converter? or timing issue?
I said converter since the car smells like SSSht when its on and timing since the previous
owner took it to a shop, maybe they did not do it properly.

 

I say either cat or exhaust leak. Check the manifold gaskets or for cracks

 

exhaust from header to tail pipe has no leak... i felt the car way slower than the 99 SI...

 

How did you test the injectors? Have you done a fuel system pressure test yet?

 

^ This.

Check the fuel pressure via the access port on the filter, that'll pretty much give you what the rail pressure is. Make sure you use sealant tape or something.

I doubt it's the cat and I doubt even more-so that it's the timing.

I'd say the next step is to
A) Make sure you have adequate pressure at the rail
B) Make sure the injectors are operational

(I'm thinking B is your issue, since you said it's weak and it sounds like ****).

 

well.... im going to test the fuel pressure .... eventually buy a new set of injectors we'll see how that goes. thanks for the input .

 

Best of luck, man. Let us know what happens!

 

"Runs like a deisel"

You sure your not missing a hole?
That would net you unspent fuel and possibly that code, And in time will surely ruin the cat if continually drivin like so.
Or a gnarkill exhaust leak before H02S1

If the engine is running rough check for compression at all 4 holes.

 

Went and grab a used set of injectors from a 50k em1 (looks and works good) still runs the same, i even went out and bought a new fuel filter.

ill see about the compression.... it just idles ugly..runs a bit decent with the new injectors...(i know this bc my brothers em1 runs better(which is for sale)lol..

 

i would first check fuel pressure.

 

Yeah, check the pressure.

Then do a leakdown and/or compression test to verify that the cylinders are sealing.

Then make sure you have power to each injector.

Also might want to verify that the spark plugs, cap, and wires are good. You can do a 'ghetto check' of the wires/cap by hooking a timing light up to them.

 

These things spark plugs, cap, and wires have been replaced and its new.

I forgot to update, so...
NEW UPDATE. I don't know what I did, but I reset the ecu and it went well.

Yee me!

Thanks anyways for the help guys!