I just bought a JDM 1994 honda civic with a D15b6 engine and stock carburator in it. I rebuild it just now. The thing is that the carb keeps "studdering" in idle. It doesn't turn off but it seems like it will. more info is that there are some small hoses around it that (ever since i got the car) are not connected to anything. thanks! Ivan

SOURCE: I need the firing order

I found an illustration for an 87 Civic 1.5L engine, carbureted. By the looks of it, it's 1-3-4-2 although this graphic shows a round cap. I see the Accord 2.0L does have the plugs in a line, not in a circle. Hope this helps!

SOURCE: 94 civic erratic idle when warm

either low coolant or your IAC motor is acting up

SOURCE: carburator rebuild

Hi and welcome to FixYa,

Almost always, the solution is to pullout again the carbs and redo. Some ideas to consider:

• overflow is always caused by the needle valve not closing the inlet seat;
• too rich mixture could be caused by wrong air/fuel mixture adjustment;
• you may also want to check how the carbs are fitted to the coupling to the engine intake as well as how the air cleaner enclosure/box fits over the carbs.

SOURCE: Carb removal from 1994 VF750C Honda Magna

You should probably get a service manual.
As I recall: Remove seat, gas tank, side covers and brackets, and plastic things in front corners of frame. Take off rubber intake thingy and slide out air filter cover toward the left side (it's a ***** because of the flap in front). Loosen metal intake housing plate, rotate and remove intake horns being careful not to bend the horns or drop screws down carb throats. Slide plate out.
All four carbs come off as one assembly. There are four rubber tubes connecting it to the engine. Loosen the hose clamps on the tubes and gently pry the carb assembly up. Find safe points on the carbs to pry where you won't break anything, and be gentle. If it hasn't come off before it will take some going from corner to corner till it comes out of the rubber tubes.
You can clean the jets without disassembling the "quad pack".
I put a little oil on the tubes to reassemble. Getting the horns back in is a bit tricky. The plate goes on loose, then they slide into the carbs and rotate as I recall. Good luck

SOURCE: 1994 honda civic 1.5 16v stalling after pressing accelerator from idle

Another place to look is your IAC, or Idle air control valve. It is bolted to the back of the intake manifold, and can be removed and cleaned. It is usually the cause of most Honda Idle problems.