idf carbs |
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idf carbs |
dumbjim |
Oct 11 2020, 12:24 PM
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#1
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Newbie Group: Members Posts: 25 Joined: 21-June 05 From: st.louis mo. Member No.: 4,312 |
I have a 74 2l with dual weber 40 idf carbs. I took it upon myself to try and adjust them. I closed air bypass screws, turned the idle screw 1/2 turn in after initial contact, and backed out mixture screw one turn after lightly seating it. I also disconnected the linkage. I now can't get my car to start. What would be my next step? Thanks in advance.
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nditiz1 |
Oct 11 2020, 01:42 PM
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#2
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Senior Member Group: Members Posts: 1,190 Joined: 26-May 15 From: Mount Airy, Maryland Member No.: 18,763 Region Association: MidAtlantic Region |
You can screw the idle screws in further. The only thing that will do is increase your idle (make it faster). I can't remember the air bypass settings but those almost never need to be touched. They are used to keep each barrel on a single carb pulling the same.
Once you get it running. Adjust the carbs are pulling the same with the snail gauge using the idle speed adjusters. At the same time setting the correct idle ~1000rpm. Then you will move to the air/fuel screws. Slowy adjusting each barrel by listening and getting the fastest idle. Too much either way it will stumble so find the happy middle. |
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