VM22 Mikuni jetting and tuning basics

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  • Опубликовано: 15 янв 2025

Комментарии • 131

  • @Typhon888
    @Typhon888 10 месяцев назад +2

    Wow!!! I did everything right. Then I seen your video and I didn’t line the carb with the manifold off. Thank you so much for that. Im just getting back into mini bikes after 2 years and got mine up and running with this Amazon carb.

  • @seanbozek8086
    @seanbozek8086 2 года назад +6

    Thanks man this has been the most useful info I’ve found out of the 15 or so that I’ve watched!

  • @nathanbostic7039
    @nathanbostic7039 2 года назад +6

    Bro!! Even when you know how to work on these, sometimes you run into an issue that you just can’t figure out. The next step is to listen to others. You saying the words “vacuum leak” made me look past the carb and realize that the gasket was ripped apart and sucked into the intake. I was over here doing everything I could to tune the carb. I noticed when the mini bike would go full throttle on choke. Thanks for the video!

    • @dirty7739
      @dirty7739  2 года назад

      Yeah a lot of people make that mistake I've done it too

    • @dexwatkins1745
      @dexwatkins1745 10 месяцев назад

      Valve cover gasket was ripped on mine. Ripped from header pipe bracket made a tear. Spent hours on installing new carb, jets, other gaskets. Finally got it going now going to try tuning.

    • @RejectReality97
      @RejectReality97 8 месяцев назад

      Tards 😂 gaskets are the thing you check BEFORE you check the first thing

    • @nathanbostic7039
      @nathanbostic7039 8 месяцев назад

      @@RejectReality97 never heard anyone recommend gaskets as the first step.

    • @RejectReality97
      @RejectReality97 8 месяцев назад

      @@nathanbostic7039 The first step to diagnosing a bad running engine with a carb is always to soak the gaskets in carb cleaner or brake clean and see if it revs up or bogs down. If it does, that's a gasket leak.

  • @rickhudson6743
    @rickhudson6743 Год назад +1

    Thank you for spending the time and effort to share the details.

  • @gingersnap7793
    @gingersnap7793 Месяц назад

    I know enough about carbs but it's amazing how easy you can miss the simplest shit. Runs like a top now man. Thanks I'm up in canada pullin away hard now. Thanks eh

  • @nickcanova1003
    @nickcanova1003 2 года назад +5

    Just getting into these clone engines , currently have a predetor ghost for my sons go kart . I have a ton of experience building and tuning 2 strokes and seems a lot of the info is the same . I have noticed the trend of running short open header pipes and these silly vm carbs , out of curiosity I want to try using modern 4 stroke mx design on these as well as different carb types like a flat slide or a pj . Also I remember having a carb on my HD that hat a 3rd jet for high ram wot maybe that could be used or the basics of it implemented on one of these . Definitely fun little engines to tinker with .

  • @gingersnap7793
    @gingersnap7793 Месяц назад

    I know enough about carbs but it's amazing how easy you can miss the simplest shit. Runs like a top now man. Thanks I'm up in canada pullin away hard now. Thanks eh also those other pilots that were wrong fit the pwks

  • @JohnWalsh-r8y
    @JohnWalsh-r8y Год назад +4

    Just slapped a 115 main on my 224. Haven’t messed with the pilot. Runs and revs great

    • @kevingoon2747
      @kevingoon2747 5 месяцев назад

      What stage are you in

    • @SechlerRacing
      @SechlerRacing 2 месяца назад

      Would like to know as well mine stubbles bad at early to half throttle but runs good a WOT. 125 main jet in it right now

    • @jarrettscott1914
      @jarrettscott1914 Месяц назад

      I have a 140 main on my stage 2 224 and like you guys, it stutters at 1/4 throttle as well. Wide open is no problem but I've found the screw on bottom if screwed out about 3 screws idles and runs better

  • @steveneng2787
    @steveneng2787 7 месяцев назад

    Great video super helpful. You said you're filming with a phone just tap on the screen where you want it to focus. Great video

  • @nicholasavignonesr2764
    @nicholasavignonesr2764 3 месяца назад

    Why would I be getting gas in the air filter? Any thoughts - great video

  • @larryfisher
    @larryfisher 2 года назад

    Great explanation your only one says look at plug,,n full throttle let off popping to lean of main🔥🔥🔥✌️

    • @dirty7739
      @dirty7739  2 года назад

      Hands on research lol

  • @lordion33
    @lordion33 2 года назад +5

    If u hold up a piece of paper or cardboard as a background while trying to show something, the cam will hold the focus u want.

  • @calebnoonan9600
    @calebnoonan9600 2 года назад +2

    This helped me so much thank ya for this video

  • @ajmontgomery4564
    @ajmontgomery4564 Год назад +2

    Try using the correct size screwdriver to get the jet out, idle to 1/4 throttle is controlled by the pilot, anything after is main, pilot flows constant after 1/4 throttle

  • @russell2496
    @russell2496 Месяц назад

    Do i have to open up the engine and remove the governer gear before installing the vm22? Sounds like a lot of risky work? Any easy workarounds?

  • @amirlincoln7183
    @amirlincoln7183 6 месяцев назад

    Perfect video thank you bro 😎

  • @SNELLERIZED
    @SNELLERIZED 11 месяцев назад

    You have that backwards on tuning the idle air screw. Backing it out leans out the idle circuit. It's an air screw.

    • @dirty7739
      @dirty7739  11 месяцев назад

      Got ya

    • @Deucealive75
      @Deucealive75 10 месяцев назад +2

      He has it correct in the video. When the screw is on the intake side of the carb, it's an air screw. When on the manifold side, it's a fuel screw. On these carbs it's a fuel screw. Same thing on the stock carb. On the stock carb the screw is after the pilot jet in the circuit. It's a fuel screw.

  • @gerardr4869
    @gerardr4869 2 года назад +1

    Great work! What pilot and main jets do you think should go on a mikuni replica put on a Apollo 125cc dirt bike?

    • @dirty7739
      @dirty7739  2 года назад

      It depends on where you're at and your elevation the higher elevation the smaller the main you're gonna run

    • @gerardr4869
      @gerardr4869 2 года назад

      @@dirty7739 I am at 3600 ft. The mikuni I bought didn’t have numbers on the jets. The bike would idle good but will die at 1/8 throttle, it didn’t make much of a difference if I moved the fuel screw from 0-4 turn out neither moving the C-clip up or down on the needle.

    • @dirty7739
      @dirty7739  2 года назад

      @@gerardr4869 Probably start off with a 120 to a 125 main

    • @gerardr4869
      @gerardr4869 2 года назад +1

      @@dirty7739 thanks. I’ll give it a try.

  • @domturiace670
    @domturiace670 Год назад

    I just installed one and i am getting a lot of kickback when starting and a little white smoke .

  • @LuisTorres-tm2jc
    @LuisTorres-tm2jc 2 года назад +1

    Hey dirty I think pilot jets u got off Amazon fits my carb do u know the dimensions of it also do u have a link for those pilot jets u got from Amazon Also looking forward on ur 224 predator build video I picked one up on Father’s Day with a 25% coupon want to mod it as well thx

  • @Try_hard509
    @Try_hard509 7 месяцев назад

    My pilot jet is a x36 and it just won’t idle at all unless with the bottom screw 4 full turns out do I need to change my pilot to a x20

  • @layneaube6074
    @layneaube6074 4 месяца назад

    Any ideas got chikuna carb kit for my mini bike installed and thing pissing gas out the overflow on the bottom, also seems like choke is reverered on these carbs or sum,

  • @MiniMotoBuildz
    @MiniMotoBuildz Год назад

    I hooked a pulse pump to it because it wasn't getting gas at all, but now it dumps gas out the overflow now when I ride it, what dose that mean?

  • @modernmountaineer
    @modernmountaineer 3 месяца назад

    Id get rid of the foam filter. I love em until i had to take my carb apart and clean it and clean it and clean it because the filter started crumbling from inside so i couldnt see it u til my bike shut off lol.

  • @biggluke420
    @biggluke420 9 месяцев назад

    Hay can you give me the link for that temp senser please and thank you

  • @SpACeCruizeR2o3
    @SpACeCruizeR2o3 2 года назад +1

    hey gota stock carb on my ducar but it has the high flow air adapter so i can only run the 62mm filter right?

    • @dirty7739
      @dirty7739  2 года назад +1

      Yes

    • @SpACeCruizeR2o3
      @SpACeCruizeR2o3 2 года назад

      @@dirty7739 1MONTH LATER THAT STOCK CARB SHYT THE BED TIME FOR MY FIRST VM22 LOL I GOT THE 120 HARD TO FIND PILOT JET AND A BAG OF MARKED MAIN JETS AND YES IT WAS ON THERE SO TIGHT BRO I THOUGHT I WAS GONNA BREK IT TRYING TO UNSCREW IT BRASS CHIP SHAVINGS ALL OVER DEF WORK ON THESE IN HIGH VISIBLE LIGHT LIL SHAVINGS COME OFF AND GET ALL UP IN THE PORTS EASY

    • @SpACeCruizeR2o3
      @SpACeCruizeR2o3 2 года назад

      @@dirty7739 YEA MY SHIT WAS POPIN THATS WHY MY PLUG WAS SO BLACK TOO RICH

  • @boof6986
    @boof6986 Год назад

    Mine does nothing but leak gas out of the over flow and then shuts off when you hit the throttle can you tell me what that means

  • @KingJames8-r3d
    @KingJames8-r3d Год назад

    About how long do you have to run it for the spark plug to change?

  • @jayvlog9841
    @jayvlog9841 6 месяцев назад

    when i full up and start is run quiek fix how to i have same carburator

  • @rockman49er
    @rockman49er Месяц назад

    Mine runs perfect but the plug looks new no matter what jets i put i went from the stock jet all the way up to a 140 main and the plug still looks new its a predator 212cc im going to spray some starting fluid around the intake today to make sure its not leaking also i am at sea level and saw a RUclips guy say he put a 130 jet at sea level and his was perfect i dont want to blow my engine 😢 im still not done with your video yet but i need help 😢😢

    • @dirty7739
      @dirty7739  Месяц назад

      @@rockman49er If you're not getting a lot of popping out of the exhaust cause popping out of exhaust is a clear sign of Of a lean condition, you should be okay. If you had a vacuum leak, you would have tuning problems if it's running good. You shouldn't have a vacuum leak.

    • @rockman49er
      @rockman49er Месяц назад

      Not really popping returning to idle perfect and lots of power just no difference from from the plug when i changed the jets do you know the normal running temp of the predator 212cc Maybe i can check if its getting to hot and maybe go to a 145 or 150 jet still going to check for a leak later today after work knowing the right temp could help me thanks for the help brother ​@dirty7739

  • @rachalhollier5679
    @rachalhollier5679 Год назад

    1977 Yamaha DT175 enduro came with a mikuni vm24 series carburetors from the factory. I know cause I have one on my non hemi ducar 212cc,& a spare parts carb,vm24.

  • @shaadow1le523
    @shaadow1le523 Год назад

    Just picked up my vm22mm carb , what jet size do you recommend for running ethanol.. thanks in advance! Great video

    • @dirty7739
      @dirty7739  Год назад

      Ethanol is generally double the size of a regular jet so if you're running A120 guess you'd be like at 240 for mathenal.

    • @jasonniles9938
      @jasonniles9938 9 месяцев назад

      Where can you find jets for these at that size?

  • @rickwhitfield7617
    @rickwhitfield7617 Год назад

    Good video bud! Curious if you had to run a pulse pump on that VM22 vs just gravity fed?

  • @warrenpeas
    @warrenpeas 2 года назад

    did you ever find these pilot jets on amazon or anywhere else cheaper? I have tried 2 different ones before finding your video both didnt fit.

  • @jojojeep1
    @jojojeep1 2 года назад +7

    Your Parts carburetor is a real Mikuni, you notice the slide is much larger, All Chinese made Mikuni carburetors have the small bodied carburetor, even if it says Mikuni. Example the one on your bike is Chinese and it can’t say Makoni because I have one. Anyway your camera is fine you’re just too close to it ha ha ha

    • @curtissmartin6322
      @curtissmartin6322 Год назад

      That's not a real real has the main jet in the bowel. Look it up

  • @RexerYTRexer
    @RexerYTRexer 10 месяцев назад

    I have a question
    Why do you doubt someone would be riding up in the mountains haha.

  • @russell2496
    @russell2496 Месяц назад

    Do you need to upgrade anything else on the engine before using this carb? I saw another video where they threw a rod because they didn't upgrade the billet rods to match this carb? Can someone please answer this question

    • @dirty7739
      @dirty7739  Месяц назад

      @@russell2496 No you don't need to upgrade anything else

    • @dirty7739
      @dirty7739  Месяц назад

      @russell2496 The idea behind putting a rod and flyweel is so the engine don't blow up without the governor.

    • @russell2496
      @russell2496 Месяц назад

      @@dirty7739 Do i have to open up the engine and remove the governer gear before installing the vm22? Sounds like a lot of risky work? Any easy workarounds?

    • @jarrettscott1914
      @jarrettscott1914 Месяц назад

      No, @russle2496 you don't have to remove anything to run that carb. I have it on a governed 224 with a cam and arc flywheel and it runs great

  • @MoHunnidzGunCollections
    @MoHunnidzGunCollections 8 месяцев назад

    I got a stock non hemi predator with governor removed and my bike has a 115 main jet stock pilot jet it bogs out full throttle

    • @dirty7739
      @dirty7739  8 месяцев назад +1

      You're gonna need better Springs and a bigger jet.

    • @MoHunnidzGunCollections
      @MoHunnidzGunCollections 8 месяцев назад

      @@dirty7739 do i necessary need that ?

  • @carlosfraga513
    @carlosfraga513 2 года назад

    I just installed a Mikuni on my minibike. 22mm I got it running took the governor out of my 212 tillotson but now, when I started it idles way too high!

    • @dirty7739
      @dirty7739  2 года назад

      Check your idle screw and physically look in the carburetor make sure the slide is going all the way to the bottom also check for vacuum leaks

  • @sandmhoder
    @sandmhoder Год назад

    Do a video on the head temperature sensor please there’s like not one video on RUclips about it

  • @scoopsf
    @scoopsf Год назад

    I have this same carb on my predator 212 stock with only a governor delete. No matter how much I tune it , it always idles high and if I don't place my go kart on stands it'll take off on me. Can u suggest any ideas on what it might be ?

    • @dirty7739
      @dirty7739  Год назад +1

      Make sure your slide is closing all the way

  • @wonderwond
    @wonderwond 2 года назад

    would you know the factory main jet size ? mines burning way to rich , have it on a 80cc, my plug is pretty wet and black, new engine only ran like 15 min tops

    • @dirty7739
      @dirty7739  2 года назад +1

      I believe they come with a 90 from the factory

  • @nollidelddik
    @nollidelddik 2 года назад

    I always thought the poping was from to much fuel and it popped from burning off in the exhaust???

  • @THEOLYMPIAGUY360
    @THEOLYMPIAGUY360 Год назад

    In my personal opinion if your turning 2 out your carbs to small especially if you plan on future modifications. You can keep jetting up but then air flow is bottlenecked from smaller carb body. Just my opinion

  • @johndeesfpv9289
    @johndeesfpv9289 2 года назад

    do you know what temp range these engines should run ?

    • @dirty7739
      @dirty7739  2 года назад

      Ngk BPR5S is what i use its a hot plug

    • @johndeesfpv9289
      @johndeesfpv9289 2 года назад

      @@dirty7739 I meant what Eng. temps should run. is there a safe or optimal range ?

    • @dirty7739
      @dirty7739  2 года назад

      @@johndeesfpv9289 ARC says 400 max

    • @johndeesfpv9289
      @johndeesfpv9289 2 года назад

      @@dirty7739 okay cool thank you

  • @SpACeCruizeR2o3
    @SpACeCruizeR2o3 2 года назад

    cant get mine to run witout the choke on i put a 115 main jet and they gave me the wrong pilot its the short one it wont fit

    • @dirty7739
      @dirty7739  2 года назад +1

      115 sounds a little small I generally you want A130 depending on your elevation

    • @SpACeCruizeR2o3
      @SpACeCruizeR2o3 2 года назад

      @@dirty7739 ok ima try a 12o i picked up my bike and threw it across my yard i was so mad bro my life sucks

    • @SpACeCruizeR2o3
      @SpACeCruizeR2o3 2 года назад

      @@dirty7739 it's running like a Dream now boss how long I think I'll get out her it's been a year so far I think it will make it to summer and what's better the tilly estart or wildcat 223 I love my ducar tho it's all I know thanks for these vids man

    • @dirty7739
      @dirty7739  2 года назад

      @@SpACeCruizeR2o3
      All the tillison engines are made by ducar

  • @l.a.m7645
    @l.a.m7645 2 года назад

    So if she doesn't start does that mean she's too lean or too rich?

    • @dirty7739
      @dirty7739  2 года назад +2

      Check your spark plug if there's fuel on it you're too rich if otherwise it may be too lean

    • @l.a.m7645
      @l.a.m7645 2 года назад

      @@dirty7739 took out plug it was black but not carbonized was able to wipe it clean with paper towel

    • @dirty7739
      @dirty7739  2 года назад

      Could be too lean

    • @becomingamotovlogermrgonza2300
      @becomingamotovlogermrgonza2300 2 года назад

      I have a grom cloan 125 with a 24 nibbie an I can’t get it to stop bogging from Quarter to full throttle. I have a 138 Idle Jet an I been upping the main jet thinking it was cause it wasn’t getting enough gas but my spark plug is really black . I started from a 115 an tried 120 an 125 while moving the needle clip as well . It’s still bogging . Any advice? I do have an after market Exhaust . Should I drop down to a much lower jet ? Like 100 or 110 ? Please help

  • @lisztomaniacgirl
    @lisztomaniacgirl Год назад

    pls, help me! is it okay if my VM22 only gets settled in about 5 rounds? screw head (mixture air/fuel) sticks way out of its little house/hole

    • @dirty7739
      @dirty7739  Год назад

      What?

    • @lisztomaniacgirl
      @lisztomaniacgirl Год назад

      @@dirty7739 sorry LOL i'm talking about the mixture screw

    • @dirty7739
      @dirty7739  Год назад

      @@lisztomaniacgirl What seems to be the problem lol

    • @jarrettscott1914
      @jarrettscott1914 Месяц назад +1

      That's about what mine does, I have a 224 and it only idles and runs good when it's about 3/4 turns out

  • @chuckhuff7123
    @chuckhuff7123 10 месяцев назад

    Another video for this and another video for that, how about making videos in a series than release them😮.

  • @alexgarvey6448
    @alexgarvey6448 Год назад

    You wanna take the washer off the plug w that temp sensor

  • @troyholland3436
    @troyholland3436 2 года назад

    Hey bro I’m getting super worried when I start it with the vm22 the bike will immediately take off on me I haven’t changed out any of the jets maybe it’s cuz the idle screw is too high

    • @dirty7739
      @dirty7739  2 года назад

      The throttle cable is hanging up on the top of it check to see if your slide is closed all the way it's a very common problem

    • @troyholland3436
      @troyholland3436 2 года назад

      @@dirty7739 how would I know if it’s closed all the way?

    • @dirty7739
      @dirty7739  2 года назад

      @@troyholland3436 You gotta take the air filter off and look inside

    • @troyholland3436
      @troyholland3436 2 года назад

      @@dirty7739 ok I’m getting super frustrated when I’m not even giving it gas it’s already at full Throddle that’s why it’s shooting off when I start it how do I fix that?

    • @troyholland3436
      @troyholland3436 2 года назад

      @@dirty7739 hey man I’m getting super pissed off and irritated ever since I did the stupid vm22 mod the bike won’t start I put everything back to stock and it will not start I’ve don’t literally everything to get it to start I’ve changed oil spark plug cleaned carb I’ve done everything and I really wanna go for a nice ride but I can’t cuz the damn thing won’t start at this point last thing I can think of is cause the linkage is messed up from me taking it apart and stuff would that make it not start ?? I’m out of options for what to do

  • @wonderwond
    @wonderwond 2 года назад

    wow u got the 200 thats the largest one they sell, stock they say is around a 150

  • @gingersnap7793
    @gingersnap7793 Месяц назад

    The makuni one that says that and Japan I think are real

  • @tempz6962
    @tempz6962 2 года назад

    i cant get my main jet out

    • @tempz6962
      @tempz6962 2 года назад

      where could i get a whole new thing the the main jet screws into?

    • @dirty7739
      @dirty7739  2 года назад

      If it's A VM 22 car operator they're only like 50 bucks for the whole set up on Amazon

    • @tempz6962
      @tempz6962 2 года назад

      @@dirty7739 i have the same carb but just like the video my main jet is stuck

  • @SpACeCruizeR2o3
    @SpACeCruizeR2o3 2 года назад

    he gets str8 to the meat n potatoes no brussle sprout shiiiiDT and dude i def drive into the mountains and hit dem slopes !!!!!! jk

  • @MalachiEleanore-s1t
    @MalachiEleanore-s1t 3 месяца назад

    Harris David Rodriguez Deborah Garcia Michelle

  • @claytonj9017
    @claytonj9017 2 года назад

    ƤRO𝓂O𝕤ᗰ 😚

  • @randyhertzberg7549
    @randyhertzberg7549 Год назад

    I don't get ANYTHING from Amazon, their descriptions SUCK, they LIE, and will say anything, to get you to click "pay now" ...and their prices aren't that great either.

  • @Cereal_Killr
    @Cereal_Killr Год назад +2

    Underneath your needle you don't have the lil plastic shim? You should...keeps needle from bouncing....tiny white plastic washer