thanks guys...i already figured out what is the trouble....the needle that allow more air or more fuel it wasn´t designed for my carb so today im gonna buy a new one besize a friend of mine (he´s got a 77 celica with a 4a-ge in it) recarb my car..and reset the timing because it was wrong

and chaffneue the black smoke means too rich mix..white smoke is blown head gasket and oil smoke your rings are messed up

By Chaffneue (Chaffneue) (64.180.112.150) on Monday, April 26, 2004 - 10:04 pm:

black smoke might suggest oil in the gas. How's the compression?

-Richard

By 79EK1 (63.195.80.15) on Monday, April 26, 2004 - 09:38 pm:

Felipe, the Idle Mixture Screw is used to adjust the idle mixture. It has no effect when driving at high rpm, or at wide open throttle. It sounds like the problem is in the carburetor secondary, but I don't know anything about the Keihin 2-bbl carbs (mine's a 3-bbl CVCC). Sorry. Dan

By felipe casanova (200.74.71.51) on Monday, April 26, 2004 - 09:02 pm:

but now i have fully closed the mixture screw and nothing happens the car still keeps throwing black smoke! (fully turn clockwise)

By lazy (165.228.57.19) on Monday, April 26, 2004 - 07:14 pm:

if it was running rich you should have tightened it.

By felipe casanova (200.74.71.51) on Monday, April 26, 2004 - 06:41 pm:

guys i really don`t know what to do! i have the stock keihin carb in my engine (77 1200)but when the rpm reach 3 and up or when i floor it the car begins to throw black smoke like crazy! i already tried what 79ek1 told me i fully closed the mixture screw but nothing! i opened and is worse help me please i don`t know what the trouble is!

p.s: the carb is TOTALLY STOCK!

By 79EK1 (79ek1) (63.195.80.15) on Saturday, April 24, 2004 - 01:14 pm:

Turn the screw in (clockwise) to lean the mixture, and out to enrich it.

By felipe casanova (200.74.71.51) on Saturday, April 24, 2004 - 12:14 pm:

anyone?

By felipe casanova (200.74.71.51) on Friday, April 23, 2004 - 10:02 pm:

hey a question....in that pic that lazy posted all right that is the air/fuel screw, but which side i have to turn the screw to make it richier mix or poorer? according to that pic should be up or down?

By Uberdork (Uberdork) (211.29.136.12) on Friday, April 23, 2004 - 05:44 am:

Good lord, I was thinking, my engine looks nothing like that, then i realised that entire thing is just the carby. Oh dear, i'll give it a shot when my dad gets back on monday, he at least knows what he's doing.

Thankyou very much for the diagram, thats a big help.

Cheers.

By lazy (165.228.57.19) on Friday, April 23, 2004 - 05:43 am:

and no need to apologise... I'm in the same situation as u as this is my first car too

These 1200 civics are possibly THE best cars to learn about engines (and all the rest) on.

By lazy (165.228.57.19) on Friday, April 23, 2004 - 05:29 am:

an opportunity to use my new toy

By Uberdork (Uberdork) (211.29.136.12) on Friday, April 23, 2004 - 05:04 am:

care to elaborate??

Sorry mate but this is my first car so im still learning. Can u post a pic or something? or describe in more detail what i need to do?

Cheers

By lazy (165.228.57.19) on Friday, April 23, 2004 - 04:28 am:

on the firewall side at the base. It may be covered by a plastic cap.

By Derb (Derb) (138.217.180.58) on Friday, April 23, 2004 - 01:33 am:

Hey all, i'm a friend of UberDork's and am helping him with the car. after we put the new plugs in, it was damn near a new engine. sounded much healthier and a bit more beefy. after we adjust the air/fuel screw in the carby its gonna be running like a dream.

would anyone know where the air/fuel mix screw is?

By Chaffneue (Chaffneue) (64.180.112.150) on Thursday, April 22, 2004 - 09:48 pm:

0.6mm for the plugs. use a good gap tool..

-Richard

By Uberdork (Uberdork) (211.29.136.12) on Thursday, April 22, 2004 - 08:32 pm:

Hi all,

Could anyone tell me the correct spark gap for this engine?? I'm going to get a new set of spark plugs this arvo and I want to set them correctly before I install them.

Also, if anybody has a diagram of the carby, or a pic that shows where the screw is for fuel mixture adjustment that would be a BIG help as my car's running very rich at the moment.

Thanks for any help.