How To Change a Crank Seal on a Two Stroke EASY Fouling Plugs Burning Oil

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  • Опубліковано 14 гру 2024

КОМЕНТАРІ • 35

  • @chrisvids1820
    @chrisvids1820 2 дні тому

    Thanks. My kx250 has been great untill recently. The engine revs up real high on a cold start, then acts like its rich spitting oil out the back and fouling plugs. Glad i dont have to split the cases

  • @Pumpkineater19
    @Pumpkineater19 Рік тому +2

    To get those seals out you can also use a small pick. Those work good too

  • @tonyscytko5286
    @tonyscytko5286 10 місяців тому +1

    Some seals have a depth setting. I cant remember if it was my yz125 or Cr250. It had a 2mm outset. If pressed in flush it would restrict the bearings getting oiled. Cost me a crank.

    • @ToyShopRestorations
      @ToyShopRestorations  10 місяців тому

      😳 that’s good to know! Sorry you had to learn the hard way 😅

  • @rs15
    @rs15 8 місяців тому +1

    Same bike, my plugs are fouling and also what seems like gear oil pouring out of the pipe when i took it off too. It was enough to create a nice garage floor memory. Just rebuilt the carb and top end so I'm eliminating possibilities at this point, I'm thinking this is my problem. Gotta drain my oil and see what levels I'm at 🥴

  • @Vazerin
    @Vazerin Місяць тому

    Im rebuilding a 01 yz250, but Im not rebuilding the bottom, only the top, cause I found out it seized from coolant leaking into head from missing gasket behind water pump, so lets just hope I dont have to do more when I grt this bike done, Ive pretty much mostly rebuilt or replaced everything

  • @mikewiggins1287
    @mikewiggins1287 Рік тому +1

    Great vid. Saved me alot of trouble!!!

  • @barkeep25
    @barkeep25 2 роки тому

    Awesome! Didn't know that about the slide hammer!!

    • @ToyShopRestorations
      @ToyShopRestorations  2 роки тому

      It comes in handy A LOT! 😂

    • @WestHaddnin
      @WestHaddnin 5 місяців тому

      Hey what do we do after we change the crank seal? Do I need to drain any existing stuff? cuz I changed it and I immediately notice a difference but looks like it needs to be cleared out?

  • @user-cd2bh7lm1c
    @user-cd2bh7lm1c Рік тому

    Would a leaking gear case seal exhibit blow by coming out of the gear case filler hole with cap off?

    • @ToyShopRestorations
      @ToyShopRestorations  Рік тому

      I’d think the clutch basket was just throwing it out of the hole as it spun 🤔

  • @mineandreuzza99
    @mineandreuzza99 3 місяці тому

    i have a 125 and keep fouling plugs, also the smell is not really good even if i use good premix, i guess i have to change the seal

  • @Thomasside299
    @Thomasside299 Рік тому

    Hi my DT 125 LC mk1 leaks a red coloured fluid/oil on 3 spots underneath my engine would this also be the Crank seal or would it be fuel from my cilinder and or carburator? bike runs great but doesnt idle to well

    • @ToyShopRestorations
      @ToyShopRestorations  Рік тому

      I’m assuming your transmission oil is red? Common oil leaks are around the shift shaft, front sprocket, or possibly the kick starter. Unless it’s something faulty like a case seam is leaking or the crush washer on your drain plug is messed up or not there. This seal wouldn’t leak fluid on the ground. I’d lean towards the stuff I said in the beginning. Get under it and wipe the bottom of your motor really good and clean and then check it every few minutes and see what gets wet again. That’s a good way to see where a leak is coming from. Good luck!!

    • @Thomasside299
      @Thomasside299 Рік тому +1

      @@ToyShopRestorations thanks man!

  • @tyler24533
    @tyler24533 Рік тому

    how did u torqe the clutch nut without the holder tool?

    • @ToyShopRestorations
      @ToyShopRestorations  Рік тому +3

      Uhhhhhh………. I gave it the ugga duggas 🤷🏻‍♂️😅 not all of them but a could quick jabs with a 3/8 Milwaukee impact while holding the basket with my hand 😬

    • @tyler24533
      @tyler24533 Рік тому

      @@ToyShopRestorations good enough for me i guess ill do the same haha

  • @thomas71730
    @thomas71730 Рік тому

    Hey, how did you know it was the seal?

    • @ToyShopRestorations
      @ToyShopRestorations  Рік тому

      The bike ran good for the first 20 hrs of the rebuild. But then out of no where it started fouling plugs. So I started with the carb and made sure I didn’t have a jet falling out or anything and that checked out good so I assumed it was the seal. It did fix it btw but ya. That’s how I got to that point lol

    • @cii5korea217
      @cii5korea217 Рік тому

      @@ToyShopRestorationsI think that might be the same problem for my 04 Cr85RB I wonder if I should pull the reeds, re jet, before I pull the case off? But bogs down smoke 💨 like crazy and no powerband and she leaks oil like a lot lizard in heat 😂

  • @Sandman_ll
    @Sandman_ll Рік тому

    Will this video work with a yz125 yamaha

  • @mineandreuzza99
    @mineandreuzza99 3 місяці тому

    do you need any special tools?

  • @3D_Zaga
    @3D_Zaga Рік тому

    This also causes white fumes ??

    • @ToyShopRestorations
      @ToyShopRestorations  Рік тому

      Possibly. I know because it was sucking oil here it loaded my silencer packing with oil and it would smolder and white smoke would roll out of the silencer even with the bike shut off. So it’s possible. But check to see if you’re using coolant or not. Could be head gasket.

  • @bigrod0069
    @bigrod0069 Рік тому

    Did it fix it?

  • @edwinperez-silva
    @edwinperez-silva 5 місяців тому

    My bike smokes excessively. Would a bad seal be the cause?

    • @ToyShopRestorations
      @ToyShopRestorations  5 місяців тому

      Could be lots of things. I’m assuming it’s a two stroke? I was fouling plugs like crazy that’s how I knew it was burning motor oil