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I have spent several months on this, reading all the manuals I have gotten. I have downloaded all the manuals I can find online, from 1989 all the way up to 2006 and I can not find a service manual for my car. My car is an Australian Honda Civic 1993 EG Sedan, Twin Carby, 1.5 litre, Manual with the engine number D15B42....

There is a lot of confusion as to what engine, carby and car I have!

Can someone please help me find my manual. I bought a second hand carby which sais EG4 on it.

Here are pics of the engine and carby I have.

 
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huuunh...
You have a very tough case, then.

Have you tried some australian sites?
where are you located?

 
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Today, I am very happy!

Went to my local auto parts store with my carby and as I was paying for my carb cleaner and gasket, this mechanic enthusiast came up to me asking what car my carby came from. To cut this story short, I told him about my fuel mixture problem and he told me how to adjust it

Apparently, you open the two little lids on the carby and there will be a piston in there that helps adjust the fuel to air mixture ratio. You unscrew a screw that holds the piston to make it loose and you use a calipre for measurement and raise the piston for more fuel or lower it for less fuel. You have to match the two pistons height and try to be atleast no more than 1mm off or else it will run rough.



Very amazed at how some people off the street would help a stranger. I decided to look at my carby again when I got home and noticed where the auto choke was that raised and pushed the cam for idle. I decided to adjust the screw next to it which helped lower my idle down to 900rpm.

Hopefully this fixes my idle issue and as for the black smoke issue. I am thinking of maybe replacing the auto choke with the wreckers version or either adjusting the carburetor pistons as described above, but I am unsure as to how this would solve the black smoke issue since black smoke only occurs when the engine is not warm. So I am thinking if I adjust it lower, then maybe, once it is warm, it will run with not enough fuel in the mixture.

Any opinions out there??

Should I salvage some parts from the wrecker carby and install it on my car and if so, which do you think would help solve the black smoke on cold engine issue?

Note that, when the weather is very cold or raining and I start the car, the black smoke issue does not occur, even though the engine is not warm. The black smoke mostly occurs when the weather is fine and I start the car and the engine is not warm.

 
Rep Power: 367

glad you got part of the troubles out of the way. Maybe you need different nozzles (was that the word?) for the idle fuel passages - they can start being corroded and let too much pass (although i am not familiar with the honda carbs, i played with the weber and solex for older VW's...)

 
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hello..hope you can fix your car trouble..do you have a link where i can download the service mannual for 2006 honda civic ex? thanks