 Carb question |
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| last337 |
 Jan 6 2013, 05:57 PM
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Member  Group: Members Posts: 421 Joined: 4-December 12 From: New Orleans Member No.: 15,221 Region Association: None  |
Hello everyone! I got my new EMPI 40s on yesterday and I have been going through the adjustment all day today. It has been a long time since I have messed with carbs and Im not sure if I am doing this correct.
Initially I got my linkages all set up and correct with the speed screw at about 1 turn in. I have all the air bleed screws all lightly seated and mixture screws about 1 1/2 turns out. At this point it is very rich but runs well at an idle of about 900 and actually comes up really nice but is smoking and even spitting out fuel from exhaust. I figured at this point I could begin going in 1/4 turn at a time on each mixture screw to the point the engine starts to run rough then back a 1/4 turn. I did this on all and it was still smoking badly. I havent set timing or anything like that but I would assume the only electrical issue (am I wrong?) that could cause rich conditions at idle would be a fouled plug but it is running smooth and not as if it is missing with a fouled plug. I am wondering if maybe I should go another half turn on the speed screw then see if I can go in further with the mixture screws. Is there anything I can do with the air bleed to adjust this? I thought they were only adjusted for syncing and not for a rich condition. The vendor I got them from claims they have the following jets: 52 idle jets 115 main jets 200 air jets 28mm venturi 550 EX. pump jets 50 accelpump jets F11 emulsion tubes Am I oversized with that I have in there now? I have been reading the following link to troubleshoot and it says if I am over 1 1/2 turns in on mixture then my jets are too big. The problem is that I cant get it to run at under 1 1/2 turns on mixture. However, maybe I should try another half turn on speed screws? Any help is greatly appreciated (IMG:style_emoticons/default/biggrin.gif) |
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| Trekkor |
Jan 7 2013, 10:20 PM
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I do things... Group: Members Posts: 7,809 Joined: 2-December 03 From: Napa, Ca Member No.: 1,413 Region Association: Northern California |
These are dual 2bbl's right? One throat for each cylinder?
(IMG:http://www.914world.com/bbs2/uploads_offsite/www.hh-autoparts.com-1413-1357618923.1.jpg) KT This post has been edited by Trekkor: Jan 7 2013, 10:22 PM |
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Posts in this topic
last337 Carb question Jan 6 2013, 05:57 PM
vw505 Did you clean and adjust the floats before install... Jan 6 2013, 08:52 PM
last337
Did you clean and adjust the floats before instal... Jan 6 2013, 09:17 PM Trekkor The only real adjustments are going to be with jet... Jan 6 2013, 09:33 PM last337
The only real adjustments are going to be with je... Jan 7 2013, 06:41 AM Wegeng_Haus
The only real adjustments are going to be with j... Jan 7 2013, 12:38 PM bperry What about fuel pressure?
The stock fuel pump cre... Jan 7 2013, 01:36 AM last337
What about fuel pressure?
The stock fuel pump cr... Jan 7 2013, 06:37 AM last337 Thanks for the info! Today I started pulling ... Jan 7 2013, 02:24 PM rhodyguy opening a air bleed screw allows air to enter that... Jan 7 2013, 03:33 PM last337
opening a air bleed screw allows air to enter tha... Jan 7 2013, 03:50 PM rhodyguy thomlinson (cb perform book) suggests setting the ... Jan 7 2013, 04:15 PM last337
thomlinson (cb perform book) suggests setting the... Jan 7 2013, 07:21 PM ThePaintedMan
thomlinson (cb perform book) suggests setting th... Jan 7 2013, 09:59 PM last337 Thanks for all the input. I am on Pelicanparts to... Jan 8 2013, 10:02 AM FourBlades My brand new set up and shipped to my door carbs h... Jan 7 2013, 07:49 PM rhodyguy Bob Thomlinson's Weber Tech Manual avail thru ... Jan 8 2013, 10:20 AM |
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