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In the petroleum field, a choke is used to control the flow of fluids. A common marking on chokes is ?beans?. Where does the term ?beans? come from and what is its equivalent in more common engineering units.

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  • Suggins Apr 29, 2010

    Answers are directed at common RF electrocic chokes, the qustion is on a diffeent subject.

  • Suggins Apr 30, 2010

    yes it was helpful, thank you.

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A bean is a device placed inside a choke that regulates the flow through the choke. This allows you to change the flow rate of the choke by simply removing the inner sleeve, or bean, with a larger or smaller one.This takes less time than having to remove the entire choke and replacing it. Bean is also used as a term for the size of that sleeve. For example a 32 bean is the equivalent to a 1/2" (inch) choke diameter. There really is no equivalent term.

Posted on Apr 29, 2010

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Dear Suggins...
Visit to the given link...
http://www.answers.com/topic/choke-electronics

Posted on Apr 29, 2010

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1 Answer

WHY DOS 2010 HUSQVARNA K750 ONLY RUN WITH CHOKE STALLS WITH CHOKE OFF


Check that the air filter on carburetor is correctly fitted and that the filter element is not blocked. If the filter does not allow air flow it will affect or prevent engine running and by applying the choke the engine will run but it will be using excessive amounts of fuel.

Aug 27, 2014 | Garden

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Choke dont work


if too rich adjust choke leaner
if too lean, adjust choke righer.

from 1920 to about 1988 , usa, 70 years we did this.
no more. well we do, but most dont now.
i still have 1 twin carb motor cycle and one single carb VW 1968.
both restored.
also the chock heater must work and the choke spring not old.
the old bi-metal spring that is old become lazy,/crazy. kick it to the curb for best experiences.
if water heated choke the water actually must flow here.
if not, it will fail.
there are 3 common types.
electric, needs 12v.
water, needs 180F hot water actual flow.
and exhaust choke stove heater. (a small horror this, dont ask)
there are others, but would need carb name and p/n

Feb 13, 2014 | 1983 Toyota Pickup

1 Answer

Maruti gypsy


You know how you have to mash the gas to the floor to set the choke? Every time you do that, a little jet of gas is sprayed downward into the air stream going down the throat of the carburetor. I think the accelerator pump inside the carburetor is doing that. But it should be enough gas to start a cold engine if your choke is adjusted right. You can observe the gas going down the carburetor... bore, I guess is the right word. (Throat is a common term, air horn is the correct term.) But to observe it, you have to take the air breather off, hold the choke valve open, and look down the throat while you pull the throttle lever to wide open throttle. Just try it a couple of times, and see if gas is being sprayed down the carburetor's air horn. It may help to use a flashlight. Of course, this is all done with the engine off.
You didn't say how it ran once started and warmed up. Is the power and performance satisfactory? Hard to say if it's a fuel problem. If the problem is only hard to start when cold, it could be your choke not adjusted or working right. You could put in a manual choke, pretty simple kit. People often do this when they don't want to fool with the automatic choke. I'm an old geezer, but I for one am glad that carburetors are a thing of the past (even though my daily driver at present has a carburetor -'87 sentra). Fuel injection is much simpler, and easier to diagnose.

Dec 22, 2013 | 1989 Suzuki Samurai

1 Answer

My 1996 VF 750 C Magna starts fine with the choke open. After a minute or so as I reduce the choke and try to open the throttle, the engine just stalls out. Cannot seem to get the throttle to control


I think you are mixed up. The choke is usually closed to start a cold engine and opened once the motor warms up. The choke is closed to restrict the air flow and make the mixture richer in fuel. You can't open a choke that's already open. It's stalling because it's starved of fuel. Either a blockage or the fuel pump is not supplying enough gas.

May 06, 2012 | 1996 Honda VF 750 C Magna

1 Answer

Hey. i have a 250cc giovanni, how does the choke work ?


The carb choke is a restriction in the air flow before the point where fuel is added to the air flow. When you set the choke, the throttle plate becomes the air restriction because the "mini" carb system feeds rich air/fuel mix in front (engine side) of the throttle plate. If you set the choke and open the throttle, the "choke" becomes ineffective...Hope this answers your question.

Jul 12, 2011 | Indian Cat 125D Motorcycles

1 Answer

24 hp Briggs Stratton sears riding mower engine wont start unless you use start fluid cleaned filter have flow to engine


If the mower starts and continues to run after injecting, you may want to make sure the choke is working properly. If the choke plate is not closing all the way, it will make cold starts difficult.

Feb 12, 2011 | Craftsman YT 4000 42" Briggs Stratton 24...

1 Answer

Engine will start but only run at choke or half choke and low throttle sputteres and or dies if you try to increase to full throttle and dies if you take off choke


Check fuel pump delivery for adequate flow. If when choke enrichment is applied and it runs, then dies when choke is off, fuel flow is inadequate and needs choke enrichment to compensate. Also, if engine dies or chokes when increasing rpms, this will be a symptom of too little fuel. Check fuel flow at pump, then, if flow is good, check for carb blockage, unscrew the jet and inspect, check the operation of the solenoid at the bottom of the bowl, it has a wire attached to it. Trace that wire to where it plugs in, unplug it and touch it to the positive pole of the battery, it should retract. If not you need a new solenoid that has the job of metering in gas to the inner bowl below the jet assembly.

Feb 10, 2011 | V-Twin Horizontal OHV Engine with Electric...

2 Answers

I just rebuilt my F-150 1 barrel Carter carb (1985)once started runs great under all power ranges.Problem? Hard to start.


should adjust the butterfly to about 3/8" opening at 50 degrees farenheit when engine is cold. Usually about 1 mark to the lean side on the choke spring housing. If unsure set the choke to the center mark than richen up one mark at a time until the engine starts and idles up when cold after properly setting choke by fully depressing and releasing the accelerator before cranking. If it doesn't idle up enough turn up the fast idle screw 1/2 turn at a time. Another common problem with the YFA is the choke heat riser tube rusting off at the manifold and the choke not unloading when the engine warms. Install a new riser tube after using a drill bit the same diameter as the tube to drill out the remainder of the old tube in manifold before inserting the new tube and attaching to choke housing.

Aug 04, 2010 | 1985 Ford F150

1 Answer

I have a Honda GX160. It starts up first pull, once its running if i start to take the choke off to put it in run possition it stalls. Checked fuel flow from the tank to the carb, took the bottom of the...


It sounds like your carb might have some tarnish built up in it and the jets inside the carburetor are not letting enough fuel through. This is really common among generators and lawnmowers because they sit for so long unused. So what happens is, with the choke "on" you are reducing the amount of air allowed into the fuel/air mixture. As you move the choke to the "off" position, you are allowing more air into the fuel/air mixture but not enough fuel is not being allowed in the mixture so it runs too lean and stalls out. Also, don't use tools to clean the carb jets, they are usually made out of brass and a tool can scar the inside of them and create resistance for the fuel flow. Hope this helps!

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1 Answer

It starts fine and runs on choke but not off choke


It sounds like you are not getting enough gas. I think it's the diaphragm, When you take it off of the choke diaphragm controls the gas flow, apparently yours is just shutting down. It's very inexpensive, and very easy to replace. Good Luck :)

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