Holley Carburetor Choke Adjustment Tips

[@itempany]

Great info....just paid to have my car serviced and elec choke connected. It is running rougher now than before. Will follow tips this weekend.

[@jefferymyles5323]

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[@cadethomas142]

@Jeffery Myles Try FlixZone. Just search on google for it =)

[@ianiker7692]

@Cade Thomas Yea, I have been using Flixzone for years myself :D

[@jefferymyles5323]

@Cade Thomas thank you, signed up and it seems to work :) I appreciate it !

[@cadethomas142]

@Jeffery Myles No problem :)

[@danielmacpherson1630]

Quote: "Turn the screw clockwise". He is turning the screw counterclockwise. You need to specify a reference point. The screw is upside down. clockwise from one end is counterclockwise from the other. Do you want me to back the screw out or turn it in? I assume backing it out will reduce the fast idle RPM and turning it in will increase the fast idle.

[@jeffcrookes2444]

Thank you! This drove me nuts! Glad I wasn't the only one. He is most definitely turning it counter as he says clock. WTF

[@redcruz11201]

Thank You for that Daniel!! a year old post came to the rescue!! This was messing me up

[@seancoleman3226]

maybe you guys shouldn't be playing with a Holley if you cannot work this out!

[@Jacob-jc2gr]

Def gonna tune it down a bit, i dont got a big enough gas tank for whatever the factory is trying to do 😂

[@joselouru]

Funny on my carb is the opposite To increase rpm is counterclockwise and decrease clockwise, I must have an old Holley , but it worked I was able to adjust the choke speed at the right rpm’s thanks

[@Handlehandlebars]

Yea he said that backwards. If you go clockwise that will decrease idle speed....

[@joeterrana8972]

Thank you. This is extremely helpful for my rebuilt Holley on my '74 CJ-5.

[@jackn5048]

How do you independently control the speed of the choke opening vs the position of the choke plate at start? My issue isn’t the duration of the choke, but the fact that the electric coil forces the choke plate fully closed at cold start when set past anything longer than the first couple notches. My engine will not start like this when cold, it needs the plate slightly open to get enough air. Sometimes it would start but run very rough and shake. Is there a way to keep the choke plate slightly open, even when it is set to the longest duration?

[@wedding4016]

Thank you for this detailed explanation of the carburetor Choke, which I followed in my old Nissan Jeep. After installing it, I did not feel any problem in operating the engine except that there is some smoke coming out with the exhaust before the engine warms up. Is this something normal? Greetings to you from Riyadh.

[@danisbell3888]

I just got a Holly road Warrior carburetor I'm having problems with the electronic choke it worked when I put it on there But now it acts like it's not getting power and all I have is a Screwdriver typelight power checker It's hooked to the ACC of the Ignition So I'm assuming it has enough power

[@joedelusant564]

Does the red cam pictured hook the choke linkage? Or does it spin freely? I'm trying to confirm if my installation is correct

[@TheJhaley12]

I've got a new Blueprint 350/375 hp with a Holley 600 on it and what he says here about adjusting the fast idle is completely backwards. I just adjusted mine and after turning the screw clockwise the idle came down so I took it counter clockwise and got it where it needs to be.

[@Fr33dom89]

So my 600 on cold start idles about 3000rpm and I backed the cam screw out counterclockwise the screw completely not engaging the cam and is still idling around 3000 did not change. So you're saying if I turn it clockwise it will lower the cold idle not counterclockwise?

[@MajinQ50]

wollens worth clockwise should lower the rpm as you’re pushing the cam which cases the butterflies to close more

[@michaelharris1455]

clockwise/counterclockwise is always referred-to from the end of the screw/bolt with the head on it. You might be confused, as the head of this screw points down, and you're looking at it from the opposite end.

[@danielmacpherson1630]

@@michaelharris1455 exactly! and that is what he does in the video. Clockwise from the wrong end. back it out or turn it in

[@stevecleveland6644]

@@Fr33dom89 Check your main idle screw on the driver side and check to see if your secondaries are not open at all. if they are just cracked open just a hair, it will affect the main idle.

[@mooosestang]

I would just like the fast idle cam to release when i blip the throttle. Mine stays at 1600rpms.

[@Fr33dom89]

I'm confused the fast idle cam screw is not even engaged backed completely out and it still idling at 3000 rpm

[@stevecleveland6644]

Check your main idle screw on the driver side and check to see if your secondaries are not open at all. if they are just cracked open just a hair, it will affect the main idle.

[@505racing3]

My choke is staying open on my brawler what do I need to do ?

[@ricardobristow8972]

Can I replace the side of my carburator we're the to black plastic piece is

[@ferragamoreyes5764]

I bought a 650 brawler carburetor could not find a throttle braket for it it's a 350 sbc? Some one help?

[@TheMilenkata]

Can i have little help ? My toyota carburator (2e engine) release the fast idle too quick. I set the choke to be little slower and adjust the screw of fast idle but now when its hot weather i start the engine but in 2 seconds its release it and the engine get really low and the car is cold and start bumbing and engine going off. When i press the gas and hold in on cold engine and put it there for 1 min and relase the rpm are normal because the engine is now warm.

[@jimgaffney4524]

is it a Holley 4bbl?

[@ericjohnson2857]

At cold startup, my engine will start quickly, but within seconds will start to stall if I don't goose the throttle for the next 30 seconds or so. I have tried adjusting richer, but the problem still exists. I think the problem is that the choke plate opens too far immediately after startup. There seems to be no adjustment for the choke vacuum piston travel which I think should be reduced. Please advise.

[@athenajohnson9413]

I have the same problem! Sorry to see nobody has any advice for us.

[@vizzyb0mb]

Right here with ya. My scout starts a little sluggish, but quickly picks up to speed. after about 30 seconds, the choke plate (Which is set as far rich as possible) is left sitting wide open. The truck Idles fine, but when I drop it into gear it immediately stalls. Mind you, that as far rich as possible is only about 2 notches back from middle mark, as the stop pins prevent me from dialing back the choke anywhere near where it needs to be.

[@joselouru]

Check your needle on the carb And flout fuel level , too much fuel can cause it to stall I had needles replaced and adjust the choke And she runs perfect again Also check if the holes on the air vents are not clogged , I use a little carb cleaner and a can of air dust

[@jordanschultz2232]

Correct this clearance if what??

[@ShaunaFox]

what if the choke plate is getting stuck on top where I can't even push it down?? this happens all the time with my holley electric carb w/ choke. my car has completely stalled while driving on a freeway and downtown because of this issue

[@HolleyPerformance]

Is the plate binding on the sides of the choke tower? It could be that the carb has been dropped or damage somehow in the past and the choke plate doesn't have the proper clearances. Or its possible that the elec choke cap has been installed incorrectly or is damaged. Is it possible to take a pic or video and point out where the issue is? Post it to your youtube channel and let me know so i can view it. Thx J

[@ShaunaFox]

HolleyPerformance I'm uploading a video now... should be available within the hour. Thank you for response

[@ShaunaFox]

HolleyPerformance video is now uploaded on my channel

[@HolleyPerformance]

I saw your video, Thx! The choke plate should never close completely. Even when below zero there should still be a slight gap between the tower and the plate. Start with about and 1/8" gap when the engine has cooled overnight and before turning the key on. You can use a drill bit ( be careful not to drop the bit into the engine) or even a small diameter screw driver and place it between the choke plate and front part of the choke tower. Now loosen the 3 screws securing the electric choke cap and rotate it ccw or cw to obtain the correct gap and re-tighten the screws. This is a good starting point and can be adjusted for a more open or closed gap depending on your climate and engines preference. You should also check the entire choke system to make sure it is in working order. Do you have 12volts at the red wire going to the choke cap with the key on? Are all the linkages connected and secured? Also check to make sure that they are not binding anywhere. After the engine has warmed up to operating temp ( 180-210 f) recheck and verify that the choke plate is completely open ( standing straight up or vertical). If not you may have to re-loosen the 3 choke cap screws and adjust. This whole process may take several days to get 100% since some operations need to have a cold engine and some hot. Let me know if this helps? if you need more guidance i can do a quick video for you to watch covering the basics. Thx again J

[@ShaunaFox]

thanks! I will try that

[@trogfield1]

good tutorial

[@crackthecan3970]

And if you dont have electronic choke?

[@sfcstephensmith]

Mine doesn’t have any marks.

[@vitelgandara6520]

The butterfly on the carb is stuck

[@vitelgandara6520]

The butterfly on the carb is stuck