For those wondering why you cannot use the throttle during a cold start: Opening the choke fully lets as much air in as possible. It also creates a pressure differential that draws more fuel in. This is perfect for a cold start. The reason you DO NOT EVER use the throttle when cold starting is because of having the choke fully open. The choke being open already allows a significantly large amount of fuel and air into the engine. If you use the throttle, you are going to dump way too much fuel into the engine, flushing out all the air, flooding the engine, and causing it to stall. During a cold start, you have to let the choke determine the fuel intake, NOT the throttle.
It’s called a choke because it chokes off the air through a small opening creating a high -velocity- of air right next to the opened choke circuit, pulling a lot of fuel for a very rich mixture that is easier to start,
Let me clear some things up. Technically, these carburetors have enrichments, not chokes. A choke and an enrichment accomplish the same task but go about it in two different ways. A choke works by restricting airflow through the venturi (using a butterfly valve) allowing more fuel to be pulled from the pilot jet. This restriction in airflow richens the mixture and allows for easier starting when cold. An enrichment works differently. An enrichment uses a separate passage for fuel to flow once the enrichment is pulled. The airflow isn't restricted, but much more fuel is added. This in turn, richens the mixture. So ultimately, the real reason you don't want to twist the throttle when using the enrichment is: opening the throttle adds air to the mix leaning the ratio out. And the whole point to using an enrichment or choke is to richen the mixture for cold starts. That's why you leave the throttle alone when the enrichment is pulled. Enrichments are often colloquially referred to as chokes in owner's manuals, and many carburetor manufacturers will cast an image of a butterfly valve on the side of the carb to indicate where the "choke" is located, even though these carbs don't use butterflies at all.
THANK YOU! I bought a YZ250F yesterday and was starting to second-guess my purchase. I tried and tried to kickstart it and it was so difficult. I watched your video and it is 100% better now!!! You helped me so much. Thank you for that.
Good tips! I learned in someone else’s video that you can’t use throttle when choke is on bc it’s counter productive. Choke restricts air into the engine, but throttle opens it up, 10 fold
I already know this as it should be done this way . Anyways thanks for putting this video up to help others some people asked me and I told them the same now it's not a problem for them👌 Great to help your fellow riders out
Only use it when you first start the bike. Let it warm up for a minute then shut it off before you ride. Don’t ever ride with the choke on. If it’s cold you might need to use it to start the bike mid ride if you stop for a bit but other than that you shouldn’t need to use it
Shpunx I feel your pain, I had so much trouble finding neutral when I started riding. The best tip I can give you is push all the way down into first gear and SLIGHTLY push up on the shifter. If it keeps slipping into second try rocking the bike back and forth.
You have to pump the throttle. You pull it to full throttle and drop it like 4 times and it will start right up. Also don't let 2 strokes idle like that. If you let it idle you'll be likely to foul out a spark plug
Pumping the throttle when the bike isn't running isn't doing anything. These carburetors don't have accelerator pumps so no fuel is going into the engine. All that is happening is the slide is going up and down, nothing else.
I have a Yamaha GYTR that i got when i was younger and never used, tryed to start it over the summer and the only time it would start was when I had the air filter off. Any tips would be appreciated :)
@@BrapGenius thanks, I popped the air filter off a little bit after I commented and it was super oily, I might replace it and see if that helps along with cleaning the carb :)
It doesn’t put gas in but it primes the cylinder, if you don’t know what that means it puts a small amount of gas and oil in the head, piston and cylinder, but that’s for a 2 stroke, 4 strokes I have no clue
It’s not the kick that that puts gas into you cylinder, you get gas in your cylinder from twisting the throttle which lets gas three your carb then into your cylinder
Taylor Sizemore yeah that’s what I thought but I just bought a brand new yz250 and I was told to prime the motor by doing slow kicks, I guess sometimes oil gets in the piston and cylinder somehow and it will prime the cylinder and piston do you don’t run it dry when trying to start it and screw up ur top end
I ride a 1989 125cc Suzuki RM but it runs really bad on low revs if i turn of the choke, like it want's to kill itself if i put in 1st gear and i don't have full throttle, any tips how to fix🤔
Septic FlameZz your carb might need to be cleaned or you might need to adjust your idle. Does it sound like it’s not running high enough like it wants to just die?
You don’t want to use the throttle with the choke on. If you tried too many times it might be flooded so just let it sit for a while and try again later
Going to try this tomorrow. Just hurt my leg trying to start it. I will try tomorrow on both my yz250 and ktm50. My boys crf50 started no problem. Hopefully they start tomorrow
Im completely new to dirt bikes. I have a 160cc pit bike that I have never started up because I can't kick start it. The compression is to badi I can push it down. It just won't start. Any tips?
Raver HTID it’s hard for first time riders to kick that kick start because they’re not used to the compression. It’s not starting cause you’re not kicking it hard/fast enough. It’ll take some time but just keep practicing, if you kick it too many times you might flood the bike (too much gas in the carb) just turn the bike on it’s side for a second and let it drain out then try again. Good luck and welcome to the bike life!!!
I’m 5’4, 31 years old, andI weigh 140 lbs. I have never ridden a dirt bike, but I love them and I would love nothing more than to ride one. What do you guys recommend I get/start with?
@@Raul1Silva did you ever get a bike bro??? I’m 24, 6 foot tall and about 155lbs. I bought a kx85 two stroke and it goes about 55mph with me on it. I could have purchased a 125cc two stroke for some more power but the 85 is pretty quick and really fun to rip!
@@The_Trinity_Effect Yes,i generally start a bike in neutral. Still hold the clutch in though from habit when I kick over a bike. Always have done when kicking the hell out of my 490. Beast to start but feels great when it finally fires up.
I always hold the clutch in when I start my yz490. A real beast to start. Need a strong kicking leg ,strong thighs and a seriuosly high kick to get it started. Normally 5 or 6 kicks to get it going. I don't kick with the stand down either. I'm 6ft 5
This video didn’t help me at all. My dirt bike won’t start the only thing I want to know is if you DO pull in the clutch or you DONT pull in the clutch when starting it up because mine is a kick starter
I should have mentioned that. 4 stroke. Yes I can crank it cold...first kick. Ride it awhile, like to a store close to me. Then go to crank it and it takes 8 or so kicks. Tried different things like adjusted air mixture screw, put in brand new plugs, choked it etc.
you sound like a douchebag pretty boy tbh buuuuut you know what your talking about and i respect that. good video man.
Banana Man lmao thanks bro 😂
wtf 💀
That's me but I forget to turn on the gas
Ong
Says the guy with a profile picture of the American flag doing 2 in the pink 1 in the stink
For those wondering why you cannot use the throttle during a cold start:
Opening the choke fully lets as much air in as possible. It also creates a pressure differential that draws more fuel in. This is perfect for a cold start. The reason you DO NOT EVER use the throttle when cold starting is because of having the choke fully open. The choke being open already allows a significantly large amount of fuel and air into the engine. If you use the throttle, you are going to dump way too much fuel into the engine, flushing out all the air, flooding the engine, and causing it to stall. During a cold start, you have to let the choke determine the fuel intake, NOT the throttle.
I didn’t know this and I kinda reved it. Now it stoped and won’t start again.. how do I fix?
If you bike is 100% working than yes.
It’s called a choke because it chokes off the air through a small opening creating a high -velocity- of air right next to the opened choke circuit, pulling a lot of fuel for a very rich mixture that is easier to start,
@@JoeTheBlacksmith13This is a much more accurate description.
Let me clear some things up. Technically, these carburetors have enrichments, not chokes. A choke and an enrichment accomplish the same task but go about it in two different ways.
A choke works by restricting airflow through the venturi (using a butterfly valve) allowing more fuel to be pulled from the pilot jet. This restriction in airflow richens the mixture and allows for easier starting when cold.
An enrichment works differently.
An enrichment uses a separate passage for fuel to flow once the enrichment is pulled. The airflow isn't restricted, but much more fuel is added. This in turn, richens the mixture.
So ultimately, the real reason you don't want to twist the throttle when using the enrichment is: opening the throttle adds air to the mix leaning the ratio out. And the whole point to using an enrichment or choke is to richen the mixture for cold starts. That's why you leave the throttle alone when the enrichment is pulled.
Enrichments are often colloquially referred to as chokes in owner's manuals, and many carburetor manufacturers will cast an image of a butterfly valve on the side of the carb to indicate where the "choke" is located, even though these carbs don't use butterflies at all.
Not me trying for 30 minutes and watch this and gets it in two kicks lmao😂
Haha glad it worked
You're not the only one...😁
i’ve been trying for 2 hours leg got so many starches from the kickstart
😂😂
🤣🤣😭😭😭😭😭😭😭😭😭😭😭😭😭😭😭😭😭😭😭😭😭😭😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂
THANK YOU! I bought a YZ250F yesterday and was starting to second-guess my purchase.
I tried and tried to kickstart it and it was so difficult. I watched your video and it is 100% better now!!! You helped me so much. Thank you for that.
Np!! Glad it helped!!
This Video saved my bike I kept on giving it throttle. thanks for your help man!
How do u turn it off Bc I wanna buy a dirt bike
Most of them have a kill switch next to the twist throttle. If it doesn’t have a switch then you will just have to stall it.
Please let me know if you have any other questions
@Wesboy 101 agreed. I was doing the throttle thing too. Thx for sharing this! - Amy
This video literally saved me. I was exhausted from kickstarting my bike because it wouldn’t start. And now I only do one kick. Thank you 😭
Glad it helped!!!
Thanks man couldn’t get my bike to start my problem was I was giving it throttle
No problem man glad I could help, I went through the same thing😂
Good tips! I learned in someone else’s video that you can’t use throttle when choke is on bc it’s counter productive. Choke restricts air into the engine, but throttle opens it up, 10 fold
That’s correct Henry, thanks for your analysis
Thank you brother, had some problems starting the bike, but the tip with having the choke on without any throttle really helped.
I already know this as it should be done this way . Anyways thanks for putting this video up to help others some people asked me and I told them the same now it's not a problem for them👌 Great to help your fellow riders out
Hell yeah brother that’s what it’s all about
Thanks. Helped me cold start my bike.
No problem!
Thanks for helping me(a lot of info)
7 mins and you like it wow :D your the first youtube to like my comment btw.
Jetsh Jet I try to stay active with my subscribers! I created this channel to help people, so I want to interact with them too.
:D
So I just started riding and I’m very paranoid when it comes the choke and when to turn it off
Only use it when you first start the bike. Let it warm up for a minute then shut it off before you ride. Don’t ever ride with the choke on. If it’s cold you might need to use it to start the bike mid ride if you stop for a bit but other than that you shouldn’t need to use it
Thank you, fr, I was so frustrated and then this worked!
Armani Then good glad it helped!!
Any tips on how to find neutral easier (I'm new to dirt bikes I ride a '12 4 stroke Suzuki)
Shpunx I feel your pain, I had so much trouble finding neutral when I started riding. The best tip I can give you is push all the way down into first gear and SLIGHTLY push up on the shifter. If it keeps slipping into second try rocking the bike back and forth.
Brap Genius Thanks man, this helped
Pull the throttle tiny bit when u try put it into neutral
Put the bike into first gear and when going half way up you should feel the gear go into neutral idk but just go half way up
Just like the bike I got its probaly like slightly up to neutral but once you get used to it, it's way easier
Dude honestly thank you so much
No problem!!
Subscribing cuz the name “brap genius” 😂😂
Ajay Houston appreciate that bro🤙😂
how do you pull the choke thing up? when i do it, it just falls down again
You have to pump the throttle. You pull it to full throttle and drop it like 4 times and it will start right up. Also don't let 2 strokes idle like that. If you let it idle you'll be likely to foul out a spark plug
Pussy Eater 338 explains why I went through like 30 plugs on this bike 😂
Brap Genius yeah. You gotta keep it rev'd up to not foul a plug
Wow, how come my 125cc 2 stroke Suzuki hasn't made one spark plug fouled yet, i have it on idle alot🤔 must be lucky haha
I've read that if your jetting is setup properly you can idle with no problems.
Pumping the throttle when the bike isn't running isn't doing anything. These carburetors don't have accelerator pumps so no fuel is going into the engine. All that is happening is the slide is going up and down, nothing else.
I have a Yamaha GYTR that i got when i was younger and never used, tryed to start it over the summer and the only time it would start was when I had the air filter off. Any tips would be appreciated :)
It’s probably a carburetor issue, try cleaning it or checking the jets
@@BrapGenius thanks, I popped the air filter off a little bit after I commented and it was super oily, I might replace it and see if that helps along with cleaning the carb :)
It floods the carb when u give it throttle when choked
Yes it does
Did you let it warm up before turning off choke I just bought a new bike and can’t get it to stay on after turning off the choke
@@420pluto5 you either need to raise your idle or adjust your fuel screw
thank you man, rly helped me
Np glad it helped!!
What gear do start the bike in
Anonymous 373 it’s best to start it in neutral. You can start it in first if you hold the clutch in as well
He didn’t just ask what I think he did, did he?
I normally start my 490 in 1st gear. I always hold the clutch in when I start a motorbike
I’m not the most Mechanically inclined person but I dont think slow compression kits puts gas in your cylinder just saying man but good video
It doesn’t put gas in but it primes the cylinder, if you don’t know what that means it puts a small amount of gas and oil in the head, piston and cylinder, but that’s for a 2 stroke, 4 strokes I have no clue
It’s not the kick that that puts gas into you cylinder, you get gas in your cylinder from twisting the throttle which lets gas three your carb then into your cylinder
Taylor Sizemore yeah that’s what I thought but I just bought a brand new yz250 and I was told to prime the motor by doing slow kicks, I guess sometimes oil gets in the piston and cylinder somehow and it will prime the cylinder and piston do you don’t run it dry when trying to start it and screw up ur top end
Dylan Stein yeah I’m just used to old bikes I guess😂 I don’t really know all that much with new bikes
Taylor Sizemore yeah same, this is the first new bike I’ve gotten😂I know as much as u do😂
I ride a 1989 125cc Suzuki RM but it runs really bad on low revs if i turn of the choke, like it want's to kill itself if i put in 1st gear and i don't have full throttle, any tips how to fix🤔
Septic FlameZz your carb might need to be cleaned or you might need to adjust your idle. Does it sound like it’s not running high enough like it wants to just die?
Thanks for helping it work now
Glad it helped
Bought a fresh rebuild bike and the old owner kicked it first kick in front of me after I exhausted myself trying lmfao. I’ll try this tmmr
Lmao good luck!
What happens if used the throttle with choke and gas on what will I have to do if it won’t start anymore I need a fix plz
You don’t want to use the throttle with the choke on. If you tried too many times it might be flooded so just let it sit for a while and try again later
@@BrapGenius i just recently got my bike yesterday but there are a lot of loose tubes that iv counted atleast 4-5
@@imsoz7741 definitely make sure they’re all tight
How hard do you push down to shift gears? As hard as possible? I just bought a yz 85 and Im learning and need to know :)
Push down hard enough to feel a click then your good because there are no more gears below that
@@jcrides1320alright 👍
Going to try this tomorrow. Just hurt my leg trying to start it. I will try tomorrow on both my yz250 and ktm50. My boys crf50 started no problem. Hopefully they start tomorrow
My buddy always struggles with his bike to start it and every time I start it I have no problem. I do it the way I do in the video
Im completely new to dirt bikes. I have a 160cc pit bike that I have never started up because I can't kick start it. The compression is to badi I can push it down. It just won't start. Any tips?
Raver HTID it’s hard for first time riders to kick that kick start because they’re not used to the compression. It’s not starting cause you’re not kicking it hard/fast enough. It’ll take some time but just keep practicing, if you kick it too many times you might flood the bike (too much gas in the carb) just turn the bike on it’s side for a second and let it drain out then try again. Good luck and welcome to the bike life!!!
Thanks for the reply. I have messed my shine up, got a golf ball size lump and bleeding haha. Will try again when it healed up.
Raver HTID haha be careful, if you don’t have riding boots get riding boots😂
Do you need to hold in the clutch
Only if you’re not in neutral
I’m 5’4, 31 years old, andI weigh 140 lbs. I have never ridden a dirt bike, but I love them and I would love nothing more than to ride one. What do you guys recommend I get/start with?
Raul Silva I know a Honda 150r is a great bike for someone your size, you’d love it
@@BrapGenius thank you so much dude...will try it🤘🏼🍻
@@Raul1Silva did you ever get a bike bro??? I’m 24, 6 foot tall and about 155lbs. I bought a kx85 two stroke and it goes about 55mph with me on it. I could have purchased a 125cc two stroke for some more power but the 85 is pretty quick and really fun to rip!
Can I just leave the fuel off when I am riding and not riding please respond
You need to turn it on when riding but when you stop you can turn it off when you want
Should you hold the clutch in when kicking over a dirt bike or just start it in neutral? I always hold the clutch in when I start my yz490.
It’s always best to start it in neutral
@@The_Trinity_Effect Yes,i generally start a bike in neutral. Still hold the clutch in though from habit when I kick over a bike. Always have done when kicking the hell out of my 490. Beast to start but feels great when it finally fires up.
my Dirtbike won’t start when the choke is on but starts perfectly fine when it’s off even when it’s cold. Do I still need to use the choke or no?
That’s weird but if it works that’s fine
U know watt I thot this wouldn’t help but the part on what u did to the carburetor it started right up
Joseph Romero good I’m glad it helped!!
With my 2013 KX85 I have to give it slight amount of throttle on a cold start or else it won’t start at all. What can I do?
It’s normal to have to do that if you’re not using the choke
I am getting a 125 cc dirt bike any tips for me
JELLY FISH is it. A2 Or 4 stroke
4 stroke
JELLY FISH that’s a good way to start, I’d say let out the clutch really slowly that’ll make it easier for you, good luck
Brap Genius thank you
Awesome vid helped a lot
Jorja LeMoine glad it helped!!!
My dirt bike doesn’t idle. Should I give it a little bit?
If it bogs out you should raise the idle with the idle screw. Watch a video on it before you do it
only runs on choke, shuts off when i press it down
May need to raise your idle
I know this vid rlly old but im going riding for the first time w my gf, and i have no clue in the world what im doing. any tips?
Have you ever ridden a dirt bike or you’ve just never ridden with a passenger?
@@BrapGenius I have rode once but i was 6 i believe and my dad started it for me. i dont remember the steps.
what about half choke?
You can put it down to half choke for a minute after you get it started if it’s cold out
When we are starting the bike do we have to hold or press one of the breaks or the clutch?
No brakes but I’d pull in the clutch
I always hold the clutch in when I start my yz490. A real beast to start. Need a strong kicking leg ,strong thighs and a seriuosly high kick to get it started. Normally 5 or 6 kicks to get it going. I don't kick with the stand down either. I'm 6ft 5
Do you have to turn of the choke or is it fine like is it necessary
TitanBloxYT you don’t have to it’s only if you haven’t started the bike for a while or your having trouble starting it without the choke on
@@BrapGenius thank you
How do you stop a dirt bike
Squirrel you pull the clutch in and then push the brake pedal and the brake lever
This helped alot
Glad it helped!
I’ve been leaving my choke on even when hot🤦♂️😭😭😭
Lmao live and learn😂 as long as u don’t ride the bike with the choke on ur fine
do we have to hold the clutch?
THEBleedingGamer yes before you shift the gear, hold the clutch and then after you shift the gear you can slowly let go of the clutch
Thanks for the video now I'll see if this crap wants too kick on.
King of The Avalon lmao good luck bud
The slow kicks are not to get gas smh that has nothing to do with gas. It’s to build compression.
Billy Cummins I’m aware
If it don’t start you probably foaled a plug or blew it up cause I’m assuming you’d know an estimate of have fill your tank is
Kagne Goldmann all good points
I am 11 on a Kx 85 2010 real fast
Wheelie4dayz 11 cool bro
im 13 and i have a yz85
I have a 2018 ktm 85sx
Thats cool bro i have a 1981 YZ 250H series its old
Same here got a 2010 kx85 11 years old
Key?
Hamilton Freitas no key on this bike
Thx
Jet Vlogs no problem!
This is old, but thanks for the tip bud 👍🏼
No problem!
I flood my ktm every time i try nd start it smh
If it floods turn it on it’s side and let the excess gas drain out
Doesn't work for whatever reason?? It's because the choke is holding the gas open pretty much..brap.genius.
Exactly
You can bump start it, I am commenting this before the video
Matthew G that is another way to start it if you’re having trouble
The for the help man
Joan Pitt glad it helped!
00:54 I'm the realest
thx bro
Sounds hella dumb but do I turn the fuel on before I try to start it? Lol
Yes the only time u turn the gas off is if you are done ridinf
I did it from……just from……memory. Lol
Good job 😂
This video didn’t help me at all. My dirt bike won’t start the only thing I want to know is if you DO pull in the clutch or you DONT pull in the clutch when starting it up because mine is a kick starter
Kentucky wild KitKats I always pull the clutch in and try starting it in neutral
Kentucky wild KitKats You don’t need to use the clutch unless it’s in gear (anything besides neutral).
Yee Yee I always had more luck when i pulled in the clutch
Brap Genius I’ll give it a try, wonder if it’ll help on my bike.
Kentucky wild KitKats it might be flooded too, turn it on it’s side until gas stops pouring out of the line
Thx It help
Clay Cougars glad it helped!
So surely dirt bikes are easy to steal if there’s no key system
Depends there are plenty of locks and you can install a key system for them some of them come with it
You bosnian? 🇧🇦❤
NASTY 2K nah I’m Austrian 🇦🇹
Is that a 250?. Nevermind it was a 125 lol
Haha now I have a 250
@@BrapGenius Is it a Yamaha?
@@brandonpettipas-elkins5062 yes
Buies clapped lmao who here in 2029
It's Death I’m here in 2030
Bike may need topend
Jace Perez that bike definitely needed a top end😂
Seems like it. U shouldn't have to kick it more than 1 to 4 times to start
WhoDat ⚜️
Yesss we out here!!! #WhoDatNation
Love you take this sub and like its the best i can do
Means a lot thank you ❤️
Yz🤩
Ohh yeahhhhhh
Wow
Yeszir
Any idea why my 125 starts first kick cold and when I shut it off and try to restart it while at operating temperature, it can take up to 8 kicks
@@ratdad48 is it a 4 stroke or 2 stroke
I should have mentioned that. 4 stroke. Yes I can crank it cold...first kick. Ride it awhile, like to a store close to me. Then go to crank it and it takes 8 or so kicks. Tried different things like adjusted air mixture screw, put in brand new plugs, choked it etc.
Been riding awhile. Know a moderate amount with these type bikes. Only thing I haven't done is adjust the valves. Just stumped. Thanks
Wash ur bike ahah
Sydney Mesko its a DIRT bike 🤣