This KX125 Two Stroke is Going to BLOW UP... First Ride Back

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  • Опубликовано: 6 сен 2024
  • KX125 Two Stroke Wide Open On new Backyard Track/MX Track
    This KX125 2 stroke is going to blow up on the First Ride making some questionable noises...
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Комментарии • 171

  • @rhetttwiss9785
    @rhetttwiss9785 2 года назад +1

    Try checking the clutch basket to see if it has play in it that’s what happened to my ktm 125 and it fixed the rattling

  • @huntercherry8926
    @huntercherry8926 2 года назад +3

    I was happy to see the 125 not collecting dust after 250 build!!! E-bike is always sick too.

  • @EmxBrandon
    @EmxBrandon 2 года назад +55

    Double check everythings tightened down it sounds more like a rattle than a tick especially since it goes away when you rev, but hard to tell through video 🤙

    • @huntergodfrey3419
      @huntergodfrey3419 2 года назад +2

      Bro shut up, he built a 250 from scratch I think he knows how to tighten down a bolt

    • @evensilset5522
      @evensilset5522 2 года назад +4

      There is nothing wrong with leaving a little tip/headsup

    • @trakstr1170
      @trakstr1170 2 года назад +4

      @@huntergodfrey3419 he asked for help diagnosing the sound. Don’t be a dink!

    • @cane2253
      @cane2253 2 года назад +1

      If anyone wants to learn about Jesus Christ reply

    • @thomasroy4384
      @thomasroy4384 2 года назад +2

      @@huntergodfrey3419 take some of your own advice Tyler is only human and it’s very easy to forget to tighten things or for things to come loose you obviously don’t know how much goes into it no negative is wanted from a bit of advice that was asked for

  • @RyderVanEs255
    @RyderVanEs255 2 года назад +2

    Mine was doing that and I had to retune the carb and put a new piston and ring in it

  • @devingaleher5183
    @devingaleher5183 2 года назад +2

    Check the stator side, could be a screw that got loose and rattling around, happened to multiple two strokes I've worked on.

  • @mattprovost3881
    @mattprovost3881 2 года назад +7

    I’d doubt it’s the motor seems to run strong, check to make sure everything is tight motor mounts, exhaust etc

  • @adamthibodeaux2970
    @adamthibodeaux2970 2 года назад +3

    My kx 100 had the same problem with the power valve hitting the piston. All you have to do is shave like an 1/8 or a 1/16 of an inch off of the end of the power valve cause if you don’t do it soon enough you’ll get the rings stuck in the piston. Mine was going through pistons and rings in like 2 weeks before I fixed it and now it’s got about 60 hours on this top end and she still runs amazing

    • @CZwies20
      @CZwies20 2 года назад +1

      What did you shave them down with?

  • @quintonmccabe9622
    @quintonmccabe9622 2 года назад +9

    Sounds like a bearings going, crank bearing, or rod bearing. Love seeing the 125 content

    • @quintonmccabe9622
      @quintonmccabe9622 2 года назад +1

      Could also be the power valve, like you said. Very well could be

  • @parkercarlson4210
    @parkercarlson4210 2 года назад +1

    check your kick starter out mine was stripped and when i kicked it the kick starer would come up but the piece that spins in there stayed down

  • @KincadePavich
    @KincadePavich 2 года назад

    So much fun to hear this thing scream!! Crank bearing though I'd guess?

  • @KyleHansen509
    @KyleHansen509 Год назад

    Watched a couple times. I just bought a kx 125 looks similar to yours didn't realize how fun it would be to ride it and im stoked next on list is 2022 KTM 250sxf Troy Lee designs edition.

  • @masonpeters2846
    @masonpeters2846 2 года назад +1

    Always wondered what that noise was on my 97 kx 125 can you show us the problem when solved

  • @just_in_time5518
    @just_in_time5518 2 года назад +1

    Love the 125 content! Got a 2000 cr125 my self. There just to fun!

  • @Bixbysayshi
    @Bixbysayshi 2 года назад +5

    Dude my 1998 KX250 makes that EXACT same sound during the second 3rd of the throttle and for the life of me I cannot track down where it comes from. So far everything seems alright and it's been running like that for a hair over 23 hours so lets see if anything blows up haha

    • @cameronclausse4696
      @cameronclausse4696 Год назад

      My 2000 of makes the noise when I bought it so I rebuilt it and same exact noise idk it hasn't blown yet.

    • @Bixbysayshi
      @Bixbysayshi Год назад

      @@cameronclausse4696 I finally found out what mine was.. and it was the stupidest thing ever. I kid you not dude, it was the springs in my footpegs hahaha they had deformed over years and were so loose, they were rattling loud enough i could hear it OVER the engine somehow, So I took them out, bent them back into shape so they had tension against the frame and the footpeg, and the sound has never came back since

  • @kylewaters7409
    @kylewaters7409 2 года назад +1

    hey i got one of these lectrons definently sounds a 1/4 turn - 3/4 turn too lean itll help your initial roll on to richen it up a little. it shouldnt bog like that and ofcourse a 125 will bog in the wrong gear but when you first get going it makes that loading up sound. that is the lean indication w the lectrons

  • @TheFrenchandAsian
    @TheFrenchandAsian 2 года назад +2

    Love ur videos thanks for entertaining me every time sucks it takes a while to make them but it’s always fun to guess what will be next

  • @tommytomasello2144
    @tommytomasello2144 2 года назад +1

    I had a kx80 did the same thing tightend the clutch basket bolt went away

  • @angeloantunes9357
    @angeloantunes9357 2 года назад +1

    it's the piston skirts that are worn, at idle and when decelerating it makes noise, when accelerating it doesn't

  • @lukemcculley2203
    @lukemcculley2203 2 года назад +2

    Check you reeds I've had a cracked one before and it sounded horrible

  • @shreddyflims2725
    @shreddyflims2725 2 года назад +3

    my cr 125 has that ticking sound to when it’s at idle. it has 10 hours and still runs like the motor is brand new. Your kx kinda sounds like it’s running lean, maybe try ritchining it up a little bit with the metering rod and power jet. but definitely tear it down and check it out

    • @honda8192
      @honda8192 2 года назад +3

      Cr’s are know to have a tick and still be fine , his kx shouldn’t sound like that

  • @jacoblucas5117
    @jacoblucas5117 2 года назад

    Power valve might be barely contacting the piston at low rpm when its at its lowest position.

  • @jaydenjarman3177
    @jaydenjarman3177 2 года назад +1

    it almost sounds like a pipe rattle other than that it could be the piston hitting the head which is not good at all

  • @adamlesny8928
    @adamlesny8928 2 года назад +1

    I am having the exact same issue with my KTM 125 xc and can’t seem to figure it out. Please share when you figure it out

  • @mxpracticedays
    @mxpracticedays 2 года назад

    You cant beat the sound of a 2 stroke ❤❤

  • @thatguy.440
    @thatguy.440 2 года назад +1

    Finally the vids are back

  • @brileyhonor5437
    @brileyhonor5437 2 года назад

    My yz125 had the same noise at high revs and it ended up being the expansion chamber gasket went.

  • @Ebikeworkz
    @Ebikeworkz 2 года назад

    Dude you are ripping the improvement with you is crazy

  • @tristanackerman8191
    @tristanackerman8191 2 года назад +1

    Just gotta send it Ty!

  • @brandonheyes-riley5864
    @brandonheyes-riley5864 2 года назад +3

    That noise is your exhaust spring there to big which means your exhaust will shake with the vibration of the engine

    • @robhayter484
      @robhayter484 2 года назад

      That ain’t no exhaust spring loose , definitely engine related, bottom end

    • @brandonheyes-riley5864
      @brandonheyes-riley5864 2 года назад

      @@robhayter484 I agree after watching the end

  • @maxs4986
    @maxs4986 2 года назад

    When you rev the bike the the rattling sounds more like something is loose and the vibrations from the engine are rattling it more so maybe just go through and make sure everything is on tight and in place

  • @jamesschutte708
    @jamesschutte708 2 года назад

    Sounds like piston pin is worn to me. It more than likely has play in the small end of the rod.

  • @austinhickman1184
    @austinhickman1184 2 года назад

    Good video. I would take the cylinder off and see if the exhaust bridge has a crack in it

  • @avizisman7926
    @avizisman7926 2 года назад

    I had a yz125 with that sound and it was a loose bolt in the power valves

  • @Greysonmoto251
    @Greysonmoto251 2 года назад

    Crank bearings are bad more than likely. Only use OEM or if you used a hot rods crank send the crank to crankworks and get a good rod and bearing put on it.

  • @DirtbikeDad
    @DirtbikeDad 2 года назад +2

    I know they don’t make the 125 anymore. What’s a good year to get that can still get parts for ???? Selling my kx 100 to get a 125 !

    • @kadencone1218
      @kadencone1218 2 года назад +1

      I had a 2002 kx 125 and it was a beast. I would say 02 and newer is the easiest to find parts for

    • @CZwies20
      @CZwies20 2 года назад

      Get 03-05 preferably an 04 or 05 cuz the 3 is hard to get a pipe for

    • @DirtbikeDad
      @DirtbikeDad 2 года назад

      @@CZwies20 unfortunately that wold make me go from a beer to older bike. Have 16 kx 100 now

    • @camdenclark8328
      @camdenclark8328 2 года назад

      @@DirtbikeDad they stopped making them a while ago obviously you would be going to an older bike but theirs nothing wrong with older bikes

  • @edmeger
    @edmeger 2 года назад +5

    Hes made 3-4 vids worth in one video 🤣🤣

    • @TylerMonagan
      @TylerMonagan  2 года назад +1

      Less total videos but more content in each video!!!

  • @aidenbecica6396
    @aidenbecica6396 2 года назад

    Sounds like that crank is goin

  • @codcade
    @codcade 2 года назад

    Yep the 125s screwed beyond repair, luckily I’ll buy it from you, 1500 bucks 😂😂

  • @user5061
    @user5061 2 года назад

    It happened to me once and it was just the spark plug that had to be tightened up i don't know if that's the problem but you could try

  • @chasehill5103
    @chasehill5103 2 года назад

    Might be crankshaft bearing, my kx85 sounds the same way and it’s definitely that for my bike so maybe take a look at that

  • @mxjayden
    @mxjayden 2 года назад +1

    Check to see if the spark plug is loose with the ticking noise

  • @tylersvensson4468
    @tylersvensson4468 2 года назад +2

    Definitely sounds like detonation or wrist pin bearing

  • @will.brown207
    @will.brown207 2 года назад

    I had a similar problem but found out my bottom frame to engine mounts had broken

  • @purs4688
    @purs4688 2 года назад

    check your magneto one of your bolts may have come off, its happened to me before

  • @spedler61
    @spedler61 2 года назад

    Sounds like a crank bearing or if you’re lucky one of your hangers might be loose

  • @andrewheath5487
    @andrewheath5487 2 года назад +1

    6:25 sounds like bottom end possibly

  • @dominicpayne23
    @dominicpayne23 2 года назад

    Did you ever figure it out bro ? My 03 kx250 is doing the same

  • @cheese6071
    @cheese6071 2 года назад

    Do you know where you got your plastics from bc I’m looking some like those for my kx125

  • @kalob4557
    @kalob4557 2 года назад

    dang that e bike is quick

  • @CZwies20
    @CZwies20 2 года назад

    I have the exact same issue just not as loud please lmk if u figure it out

  • @yourlocalhooligan
    @yourlocalhooligan 2 года назад

    Had a similar sound on my 250sx. Turned out to be a bad connecting rod bearing. Had lots of play in the con rod on the crank side. Hopefully it’s not that tho

  • @baileyjarvis6230
    @baileyjarvis6230 2 года назад

    I think it is the power valve because it sounds a bit boge

  • @MOTO_MAVERICK53
    @MOTO_MAVERICK53 2 года назад

    That sounds to me like a slight bit of piston slap I had this on my old rxs100 when revs given it went away

  • @shanedoyle7036
    @shanedoyle7036 2 года назад

    It goes away because the rpms are up but I'd say that it's ur piston or a bolt is loose down near there or something

  • @jacksonmarshallkramer5087
    @jacksonmarshallkramer5087 2 года назад

    The screaming of the 2 stroke is how a dirt bike is supposed to sound.

  • @paddymc6078
    @paddymc6078 2 года назад +1

    Looked like you had the caliper pistons in the rong way around last time sounds like the rod on the 125

    • @paddymc6078
      @paddymc6078 2 года назад

      If you rebuilt the master cylinders make sure you have the seals facing the right way to on the 250

  • @user-rg6fm4vt2n
    @user-rg6fm4vt2n Месяц назад

    how much in parts would it cost to build kx 125 from start

  • @lucasyoung2499
    @lucasyoung2499 2 года назад +1

    I feel it would have blown up or at the very least gotten worse wile you were riding if it was crank so I would check your clutch

  • @youngboyslick7196
    @youngboyslick7196 2 года назад

    Sounds more like a loose bolt. Could be internal if you just rebuilt something. Check all bolts

  • @kylegorman2452
    @kylegorman2452 2 года назад

    Homie if flying, I can’t wait to get a bike bro

  • @matthewsavoy14a
    @matthewsavoy14a 2 года назад

    I don’t know if I’m correct or not but I think it’s in you’re rod like a bearing or something. That’s what I would check

  • @dominicpizzitola1095
    @dominicpizzitola1095 2 года назад

    hi i was wondering where you got the graphics frome on the kx

  • @tanishpatel9508
    @tanishpatel9508 2 года назад +1

    It could be something wrong with the crank or the bearings. Definitely something wrong with the bottom end. :)

  • @cjshorts07
    @cjshorts07 2 года назад

    Cracked piston

  • @cohenreid6197
    @cohenreid6197 2 года назад +1

    Check power valve

  • @finnishmf
    @finnishmf 2 года назад +1

    Ohh yes the kx125

  • @CyrusFisher619
    @CyrusFisher619 2 года назад

    Are the motor mounts tight? Mine were snug but not torqued down on my rm and they sounded odd

  • @aarondashkevich8425
    @aarondashkevich8425 2 года назад

    My kx100 had same noise but a little quieter than that and it ran fine. Never did anything about it and nothing happened

  • @zook_291
    @zook_291 2 года назад +1

    Isn’t this like the 4th piston since you’ve owned it?

  • @shitehead7839
    @shitehead7839 2 года назад

    Top end bore could be to big or to small

  • @thefinerthingsinlife5963
    @thefinerthingsinlife5963 2 года назад

    Check the pipe springs? Maybe one broke

  • @liamvanbussel2820
    @liamvanbussel2820 2 года назад

    You might have a little bit of play in your crake or your power valve might be loose

  • @huntermaxfield9942
    @huntermaxfield9942 2 года назад

    Rebuilt my bike same tic but 15 hours in the rebuild nothing happened yet

  • @tyson1079
    @tyson1079 2 года назад

    its the piston and clutch

  • @davidbarnes8921
    @davidbarnes8921 2 года назад

    I had a bike that had a powervalve that sou ded similar

  • @motomechanic5711
    @motomechanic5711 2 года назад

    Piston and or cylinder are wore out. Also sounds like your rod bearing is a bit wore out. Tear it down, time for a rebuild.

  • @imbeingfrank3864
    @imbeingfrank3864 2 года назад

    What track is this. Looks nice.

  • @nolanwhitney3242
    @nolanwhitney3242 2 года назад

    Clutch related or upper piston bearing

  • @deeganmoore9798
    @deeganmoore9798 2 года назад

    just adjust the valve gap ;)

  • @factionsvicious
    @factionsvicious 2 года назад

    Sounds like a crank 2 me

  • @ryantibbs
    @ryantibbs 2 года назад

    Power valves maybe or crank

  • @troybullock3027
    @troybullock3027 2 года назад

    sounds like piston slap

  • @carlolsson6478
    @carlolsson6478 2 года назад

    check the rod bearings

  • @joetribeany6580
    @joetribeany6580 2 года назад

    Is it a new crank?

  • @i_taco_every_rail951
    @i_taco_every_rail951 2 года назад

    Can u ride on ur land again?

  • @aussieendurox5262
    @aussieendurox5262 2 года назад

    Not a mechanic by any means but I think it could be Piston slap

  • @bikelife4ever538
    @bikelife4ever538 2 года назад

    Main bearings might be getting ready to go.

  • @Jake-rp9cv
    @Jake-rp9cv 2 года назад

    sounds like a typical lectron owner.... Throws in it out of the box and its a tad bit too lean and roaches the crank bearings right away....

  • @snowydemo6629
    @snowydemo6629 2 года назад

    Honestly don't see how people can just listen to a bike and be like oh there's a tick I listen to mine and it just sounds normal but then I always think there's something

  • @thatdudebrody2887
    @thatdudebrody2887 2 года назад +1

    Beauty

  • @blakedemby7205
    @blakedemby7205 2 года назад

    It sound like the kickstart is rubbing

  • @knallerttuning-dk9666
    @knallerttuning-dk9666 2 года назад

    Sounds like the power valve

  • @bozobuiltit
    @bozobuiltit 2 года назад

    what track is that n where ?

  • @connorphillips7857
    @connorphillips7857 2 года назад

    sounds like a Kx85

  • @tygotygo828
    @tygotygo828 2 года назад +1

    big end

  • @koolclay8441
    @koolclay8441 2 года назад

    I’m I the only one who finds this track very very similar to the mx bikes track alien mx?

  • @Hotlz220r
    @Hotlz220r 2 года назад

    Check the kips

  • @joshuasimon1106
    @joshuasimon1106 2 года назад

    Check your squish

  • @Hudson12339
    @Hudson12339 2 года назад

    You get a new truck?

  • @martinwestaway4161
    @martinwestaway4161 2 года назад

    its nothing i have the same sound with my kx 85 and it has never went wrong