They don't have a decompression lever from the factory, it's a decompression mechanism built into the exhaust cam... also when you twist the throttle like before starting it that much it sprays tons of fuel into the cylinder (because of the accelerator pump) and will flood it out. You need to retune that pos as well It's popping way more than it should be
@@streetkingracing6593 that means that it was a yz426f and not a 450 check the vin number is the 10th digit is not a 4 or 3 and it is like 1 or 2 then it’s a yz426f
Right!!! It is insane the power. People they not understand that 450 are not easy to turn on. Only the new one are easy. Strong legs for the kick start.
No decompression lever on the 450s of that year. Only a hot start lever wich enrichens the fuel mixture to get it started easier. The decompression levers we're on the wr 426. The 450s have a small cam built into the exhaust cam that bumps one of the valves when kick starting to release some compression making it easier to kick start. Once the engine is running. The small decompression cam is overrun by centrifugal force Wich disengages it. But it sounds like your running super lean. That's why it's popping and sounds like shit.
@@romaveseluy6419 Щиро вітаю! Я теж українець🇺🇦 і я тут перекладаю, що потрібно перевірити карбюратор, він може бути дуже брудним, якщо не почистити. Крім того, вам потрібно перевірити гумовий адаптер, який з'єднує карбюратор з двигуном. переконайтеся, що немає отворів. якщо у вас є ще запитання, не бійтеся запитувати слава україни!
Not yet bit the bike got flooded in a storm so I open the engine waiting for parts to do a complete engine restore from top to bottom. But if you got same problem like was mine just need to do a carburetor setup. My was to lean.
@juliomartins6570 yes it can probably be the valves too. Need check it out. the valves got shimes that need change it sometimes. Not so difficult brother. Just remove cover from heat and check it out. If you any questions I will be here just lmk
@@streetkingracing6593 I already did that, the bike came with all the parts for me, I assembled everything from scratch, the problem is that the cams (one was welded and is not from the bike and the other has a pin (the exhaust one) that makes the valve open at the moment compression), I don't know if this is normal
Yes, I got the engine open because I got flooded by a hurricane 🌀 on FL so I got flooded with beach water so when I open got sand and salt instead engine. Now I'm in process of rebuild. Soon will be ready. Stay tuned for new videos.
You talk lot shit boy, you never had a dir bike. Check out my other videos. That it's a proyect dirt bike. I got another one and more. So just see and stay in silence if you not know shit 🤫🤫🤫
@@streetkingracing6593 It does man, it's not supposed to pop like that. Usually caused by a super rich air/fuel mixture or out-of-spec valve clearances, could potentially be an exhaust leak too.
@@nickolasvaughn667 Afterfires are caused by both rich and lean air/fuel mixtures. A rich mixture results in incomplete combustion of the fuel, and subsequent combustion of that fuel within the exhaust system. Lean mixtures burn at slower rates than richer mixtures, therefore it's possible for combustion to still be occurring by the time the exhaust valve opens and fuel continually combusts in the exhaust system.
![ILLSLICK - WINTER IS COMING [Official Video]](http://i.ytimg.com/vi/dwTMeM1zIhQ/mqdefault.jpg)
They don't have a decompression lever from the factory, it's a decompression mechanism built into the exhaust cam... also when you twist the throttle like before starting it that much it sprays tons of fuel into the cylinder (because of the accelerator pump) and will flood it out. You need to retune that pos as well It's popping way more than it should be
Mine had it before and a take it out.
Thanks brother
Everything this guy said
Thanks
@@streetkingracing6593 that means that it was a yz426f and not a 450 check the vin number is the 10th digit is not a 4 or 3 and it is like 1 or 2 then it’s a yz426f
Rough idle and lean, zero valve clearances causes the valve to remain open and let the compression drop and air to get in
Thanks brother
indeed
Just got ahold of this same bike and it is a fuggin monster! So much power it’s crazy!
Right!!! It is insane the power. People they not understand that 450 are not easy to turn on. Only the new one are easy. Strong legs for the kick start.
No decompression lever on the 450s of that year. Only a hot start lever wich enrichens the fuel mixture to get it started easier. The decompression levers we're on the wr 426. The 450s have a small cam built into the exhaust cam that bumps one of the valves when kick starting to release some compression making it easier to kick start. Once the engine is running. The small decompression cam is overrun by centrifugal force Wich disengages it. But it sounds like your running super lean. That's why it's popping and sounds like shit.
thanks brother
1 Peter 5:7 in the Bible: Cast all your anxiety on him because he cares for you
Yessir a fellow worshipper of Jesus 😂 dirt bikes are also way to get anxiety to fall away
Tru but God do it better
Amen❤️
The back fire was so good🔥
It's usually not a good thing
@@iAmUrTeti I think it’s warming up tho but I rids a 2 stroke mine doesn’t do that
@@rjj9168 no, even if it pops while warming up it’s not good, the valve or valve clearances can be bad, or there’s an exhaust leak.
@@iAmUrTeti true
@@iAmUrTeti it was more sarcasm
My yamaha yz450f 2012 has exactly the same problem. If I repaired it, tell me what the problem was?
Ok brother i lyk
@@streetkingracing6593 my english is bad i'm from ukraine. i don't know how to solve this problem
@@romaveseluy6419 Щиро вітаю! Я теж українець🇺🇦 і я тут перекладаю, що потрібно перевірити карбюратор, він може бути дуже брудним, якщо не почистити. Крім того, вам потрібно перевірити гумовий адаптер, який з'єднує карбюратор з двигуном. переконайтеся, що немає отворів.
якщо у вас є ще запитання, не бійтеся запитувати
слава україни!
Doesn't sound too good bro, like it's holding for dear life. Check air and fuel supply
Also why tf are you floring it? Like it's an old astra in the winter, you're floading that shit
Proverbs 4:26 in the Bible: Give careful thought to the paths for your feet and be steadfast in all your ways
Did you solve the problem?
Mine keeps sending shots like that but if I let go of the accelerator it dies
Not yet bit the bike got flooded in a storm so I open the engine waiting for parts to do a complete engine restore from top to bottom. But if you got same problem like was mine just need to do a carburetor setup. My was to lean.
@@streetkingracing6593 They told me it would be the valves, but I've also thought about the carburetor, but I don't know how to adjust it.
@juliomartins6570 yes it can probably be the valves too. Need check it out. the valves got shimes that need change it sometimes. Not so difficult brother. Just remove cover from heat and check it out. If you any questions I will be here just lmk
@@streetkingracing6593 I already did that, the bike came with all the parts for me, I assembled everything from scratch, the problem is that the cams (one was welded and is not from the bike and the other has a pin (the exhaust one) that makes the valve open at the moment compression), I don't know if this is normal
@juliomartins6570 wow brother probably was that. The weld cam
Aftermarket pipe without changing the jets?🤔
Garbik fajeczka i lecisz Mister
What exhaust pipe are you using sounds mean
Yoshimura love it too
Thansk bro
Jesus Christ loves y’all
Need to rejet that carb
Valves
Needs valves shimmed and carb clean and jetting
Yes, I got the engine open because I got flooded by a hurricane 🌀 on FL so I got flooded with beach water so when I open got sand and salt instead engine. Now I'm in process of rebuild. Soon will be ready. Stay tuned for new videos.
@@streetkingracing6593dope
Bike is running real rough, and a properly tuned machine should not need any throttle input to get it started.
You're going to blow it up it's running lean that's why it's popping
Too lean or too fat? when it keep firing shots like that, isn't it because of too much petrol?
I could start them by just bumping the compression release mid kick
It got hotcams
John 3:3 in the Bible: Jesus replied, very truly I tell you, no one can enter the kingdom of God unless they are born again
(Sigh)
I was about to say thanks for spreading the good word but it’s false
❤❤❤❤❤
Not the cigarette😭💀
Needs some valve adjustment work done
You “started” the dirt bike… Electric bikes “turn on” lol
Bro adjust that carburetor
Ephesians 5:4 in the Bible: nor should there be obscenity, foolish talk or coarse joking which are out of place, but rather thanksgiving
You will foul your plug out giving it throttle and especially wit a fcr carb
That think needs a valve adjustment! Too many pops
Tryna start it like a 2 stroke
The decomp lever is only for when it's hot in a mid moto. But that thing needs tuned sounds like shit
Needs a valve job to say the least😅
I doing a complete rebuild
Why you giving gas to it not even on thats bad for the bike
@ENMANUEL787 thanks brother
Too lean, tighten air fuel screw
Ok thanks brother
Too lean or too fat? when it keep firing shots like that, isn't it because of too much petrol?
Way to lean bro
Thanks brother
That’s lean af
Réglage soupape copain ça claque
Карб настрой
You need a bigger pilot jet in the carb my boy
Ok thanks bro
*Laughs in cr500*
cr500 is much easier to start than 450 4smokes
@@captainblacksparrow3229 cant be. Surely not. Never had a 450 so cant say for sure
No shit what he said
That thing is running way too lean...
short guy lol
1st try
Yeah right 😅😂🤣
Rookie stop if man
Yeah right man lmao 🤣
People like this should not own a dirt bike 🤦🏼♂️ so much going on here
You talk lot shit boy, you never had a dir bike. Check out my other videos. That it's a proyect dirt bike. I got another one and more. So just see and stay in silence if you not know shit 🤫🤫🤫
@@streetkingracing6593 you’re right, i’ve never had a “dir” bike. I own many Dirt bikes tho. Clown
sure daddy & mamas boy
@@streetkingracing6593 How original..
@@panteraa9195 whatever dude
sounds horrible. maybe not ride until a rebuild.
On process of rebuild, soon new video
Runs like shit
Let's ride, and place a bet 😉
@@streetkingracing6593 It does man, it's not supposed to pop like that. Usually caused by a super rich air/fuel mixture or out-of-spec valve clearances, could potentially be an exhaust leak too.
@@storm5013 that would be lean it's running way too lean lean makes it pop and back fire not rich
@@nickolasvaughn667 Afterfires are caused by both rich and lean air/fuel mixtures. A rich mixture results in incomplete combustion of the fuel, and subsequent combustion of that fuel within the exhaust system. Lean mixtures burn at slower rates than richer mixtures, therefore it's possible for combustion to still be occurring by the time the exhaust valve opens and fuel continually combusts in the exhaust system.
That doesn’t sound right
That’s a 426f
They have the same bodystyle, the 400 too
That is not running
That doesn't sound healthy at all....
awe you need a decompression lever for your 450😢😂
Carb clean and valve adjust is in order. That bike runs like shit.
That motorcycle is useless for a competition if it turns off hahahaha