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Help needed dcoe carb issues
carlknight1982 - 24/4/13 at 06:23 PM

I'm looking for someone knowledgeable in dcoe carbs and their set up to come owner and help me with my carbs I have my mt booked for 04/05 and after having the carbs rebuilt i can't get the idle right or the throttle response, I don't ave the money to take to anywhere to get it sorted and have lost author in the guys who rebuilt. The carbs

I'm located in Flitwick Bedfordshire and home after 530 Eve's and all weekend


r1_pete - 24/4/13 at 06:35 PM

Setting DCOEs up is not just adjusting the settings. Venturis, main jets, pilot jets, emulsion tubes all need to be matched to the needs of your engine. Additionally there are different DCOE bodies, with different numbers of progression holes to overcome acceleration flat spots particularly in 16v fours.

If you can list your engine, carb specs etc. people on here may be able to help, I have some experience of type 9s and 152s on 4 and 6 cyl engines.


carlknight1982 - 24/4/13 at 06:38 PM

Carbs were running fine prior to the rebuild no major parts etc etc have been changed just what comes in the refurb kit


perksy - 24/4/13 at 06:46 PM

Dave Andrews's guide is pretty good.

http://www.s262612653.websitehome.co.uk/DVAndrews/webers.htm


There's no real 'black art' to setting them up as long as their not badly worn in the first place or have incorrect/mis-matched components.


carlknight1982 - 24/4/13 at 06:50 PM

ive done that as much as i can without a carb balancer already hence the cry for help, but thank you anyway


perksy - 24/4/13 at 06:57 PM

You'll need to balance them properley otherwise they will never work i'm afraid


Some folks use a piece of tube but i've never had much success that way and have a proper carbalancer that makes it so much easier.


MikeR - 24/4/13 at 07:11 PM

you can balance at home with some plastic tube to your ear. sure I read a guide on here years ago.


carlknight1982 - 24/4/13 at 07:13 PM

I don't know what I'm listening for, I'm just trying to get a little help on this one as I've tried all I know


britishtrident - 24/4/13 at 07:26 PM

You need to hold the tube in exactly the same position relative to each carb bellmouth, other than that it ain't rocket science DCOEs are the easiest carbs to balance by ear.


carlknight1982 - 24/4/13 at 07:29 PM

Could being out of balance make them idle fast even when dole screws are screwed in all the way?


Dingz - 24/4/13 at 07:57 PM

Yes, because one set could be fully closed and the other open. As British Trident said try listening to them with a piece of tube, you are listening to the air being sucked into the carb they all have to sound the same.