What Caused This CR250 Engine Knock?
What Caused This CR250 Engine Knock?

this engines got issues I am just as
curious as you guys are to figure this out however just to keep the suspense
rolling I have got some parts to clean up sorry I had to I’m gonna load up some
of these parts into this bin drop him in the cleaning tank and get scrubbing since most of these parts are aluminum
I’m gonna touch them up with the mag wheel cleaner over here by the sink so
I’m just gonna drop a few of them into the bucket let them soak and then start
scrubbing just pull the brake pedal out of the bucket of mag wheel cleaner let’s
see how this thing cleans up absolutely meant as always cleaning
these parts I noticed the tip on the shifter is a little bit loose and what
you can do to fix that is pinch the sides with the set of vise
grips and it’ll tighten it back up kind of a temporary fix though so you can
tell the tips pretty floppy right now go ahead and pinch this down see if I can
fix it so the tip is pretty tight now let’s see if it pivots yeah that’s pretty sticky gonna work
that in a little bit and I think adding some oil in there
will help it out dang this shifters like new again it’s amazing what a little
redneck fix will do all right enough dicking around let’s go
check out this engine so as you can tell there is nothing holding the cylinder or
head on looks like he was just set on here so this is gonna be an easy
disassembly oops no piston that would make sense
though with everything just set on here got a little rust on this crankshaft
here both the rod bearing seems like it’s in pretty good shape
no up-and-down movement so that’s good I don’t see any detonation on this dome
that’s a great sign see how the cylinder is the bore seems to be in decent shape
there is somewhere here near the exhaust port it looks like there’s a little step
in it I’m gonna have to check into that there’s a little bit of a ledge right
here this is definitely gonna need some work the exhaust bridge doesn’t look
like it’s cracked at all and the rest of the bore appears to be in pretty good
shape so we’ll have to get the cylinder replated already sleeved or I might just
sell it as a core and go buy a new one I’ll have to weigh out the cost on it
with that taken care of it is back to cleaning
so these nastier parts such as the triple clamp and brake calipers are
getting pressure washed first and then everything is getting dumped into the
soak tank these parts are definitely going to need
some soak time and another pressure washing while those parts are soaking I’ve got
some more scrubbing to do just a little more pressure washing and
I’ll have these parts looking brand new again in case you guys are wondering how
I’m getting these higher up shots I’m actually putting the camera on the
tripod up on these tubs really sketchy but got to work with what I got so I set
it up just like this so the parts came out pretty clean but
there’s still some corrosion left over particularly on this linkage and the
rear caliper mount so we’re gonna see if this mag wheel cleaner can strip that
off or not and actually what I have in this bucket is I bought like thirty
bottles of the mag wheel cleaner dumped it all in that way I can soak parts in
it and reuse it Wow
just wow even I’m surprised I honestly did not think that corrosion was gonna
come off the linkage or the caliper mount but I’m gonna take this stuff a
step farther I’ll show you in another video during the cleaning process I
happen to notice that the reeds are chipped right here on the corner so I’ll
be adding that to the growing list of parts that I need for this bike that’s
getting kind of long let’s hope I don’t have to add linkage bearings to that
list so I’m gonna pull these things apart along with the kick starter and
grease everything up at the same time well this is pretty surprising I did not
think there was gonna be grease inside this linkage it’s actually in fairly
good shape so what I’m doing here is I’m wrapping a screwdriver with a rag and
then just running it in and out of the bearing try not to spin the bearings at
all and this cleans them up pretty well you know what
since I’m building this bike for myself I’m gonna pop these seals out and just
do a little more thorough cleaning all right time to grease this thing up
and put it back together lately I’ve been using this mini grease gun a lot
works awesome for smaller projects like this once I have a good amount of grease
into the bearing I’ll use this little acid brush to spread it around now
what’s on the grease up the pin it’s gonna pop this thing back in there
hopefully all the bearings stay in place should be buttery smooth now oh yeah
that feels good now let’s hope these other two bearings
are in good shape as well oh boy this one’s a little rusted not a good sign yeah this one’s pretty rusted I’m gonna
have to pull it apart and hopefully it cleans up you know I could just replace
this bearing and be done with it but I’m always trying to find ways to be a cheap
bastard so I’m gonna pull this apart see if I can clean it up before I attempt to fix the other
bearing I’m gonna pull apart this lower shock bearing see what kind of shape
this is in definitely a bit dry and it’s just falling apart with two junk
bearings and a pile of rust I’m just gonna replace all these bearings along
with the bearings in this piece as well so much for a greasing up this bearing
just for the heck of it I’m gonna pull apart this bearing and see what kind of
condition it’s in that one actually looks like it was just released it’s in
really good shape I’m guessing this Kickstarter pivots
gonna be in a little better shape I’m gonna pull it apart and we greased it
and these screws are usually locked itíd so I’m going to use an impact
screwdriver to loosen it up all right this thing is looking pretty
grungy as well should clean up fine though man this pivot is incredibly smooth now
as you saw I packed it pull them full of grease if there’s one thing I’m picky
about on a bike it’s the kick starter I’ve got to have a smooth kicker well
guys that is all I got for you today hope you enjoyed it I really want to
tear into this motor and figure out what the issue is with the shifting if you
remember right I was trying to get it into gear and it just wouldn’t shift
I’ll show you what’s up with it so going up is completely solid and pushing down
just got a few inches of slop it’s not really doing much either so in the next
video I’m gonna be tearing this motor completely apart stay tuned thank you so
much for watching guys happy holidays and I’ll see you in the next video

100 thoughts on “What Caused This CR250 Engine Knock?”

  1. Cameron Niemela says:

    Hope you all have a very Merry Christmas!! Thank you so much for all your support over the years.

  2. klxer jake30 says:

    what the fuck this video is for cleaning parts not the engine fuck! dont watch

  3. Peter Cabacan says:

    The people near by you are so lucky 😁

  4. stonecraft98 says:

    Doing shit in this video, fucking wrong title, but nice cleaning I need to admit

  5. MOTO BOYS TV says:

    I have a micro sprint with a cr270 and it gets dirty quick so what's the best way to clean dirt and oil off

  6. Voltic Reactor says:

    Bro you putting way to much grease on thats why all that excess black crap is on it

  7. Schmittzle99 says:

    I added a like to this video as soon as he said "cheap bastard"

  8. Андрей Гаранькин says:

    Двигатель утонувший был?

  9. turbinepower77 says:

    Glad to see somebody do a thorough job on dirt bikes. Thats how I do mine.

  10. รู้เรื่อง กระเบื่องแตก says:


  11. Fishing North Queensland says:

    Another good video mate good work I would love to strip and restore bikes for a living just don’t no where to start

  12. Octavio S. says:

    SAY SOUP ; )

  13. Ben Aman says:

    Just 1 question if the body frame is bend can it be press back and what about the handling performance

  14. carlos abraham says:

    What i kind of impact drill you use to undue the clutch and stator nuts? Is it a simple 18 impact drill?

  15. Chris Magenot says:

    Dude, you are so meticulous. It is really refreshing to see someone be so detailed and content in every process. I am a bit impatient when it comes to those tedious tasks. You've inspired me to be a little more calm and enjoy the process more, because I'm certain the result of your build will shine. I also appreciate you taking the time to teach. Keep it up! Thanks.

  16. Hamp Craft says:

    I just wanna rebuild a bike right now

  17. Elkku Haastaa says:

    What grease do you use?

  18. MotoDay says:


  19. nobber d robber says:

    thank u

  20. 23az3 says:

    I recommend using sonic cleaner when cleaning

  21. leandro says:

    Great videos man ,keep going 😀 !!!

  22. Scott wolverine says:

    dude you are awesome! keep up these sweet videos!

  23. Jordan Brown says:

    11.43 lol

  24. HaLuNkE ST0NER says:

    knock, knock
    Who's there?
    it's me your engine

  25. Chip #14 14 says:

    whenever I see your videos I find new tricks, your clean and high level jobs and I am mechanical and implemented some of your work 👍

  26. Chip #14 14 says:

    in the head of the cylinder I cut the combustion chamber to 45% until it reaches the spark. This increases efficiency and better acceleration from medium to top

  27. Stuart Kaufman says:

    5 seconds in i knew there was no piston

  28. Anthony Munn says:

    I enjoy cleaning parts when disassembling. That looks like fun.

  29. REM44MAG says:

    @Cameron Niemela Why don't you use a brass tool for removing the seals? I fuckin love these videos, making me want to tear my bike apart… Liked and subscribed.

  30. Gsxr-1000 Rider says:

    always amazes me how nice you get these parts looking again

  31. fw1421 says:

    Your videos are good but watching parts be scrubbed isn’t interesting. Get on with the motor teardown.

  32. john smith says:

    How is your parts soak tank heated?

  33. William Wohaska says:

    4:36 he starts to take apart the motor thank me later

  34. Ams Gaming says:

    thats some old parts cleaner fluid.

  35. Steven Parsons says:

    My news bike is a 99 xr250r and oldest is a 1980pe175 both run great

  36. Prime 05 says:

    Ur 2 stroke Honda cr250 will be worth 2,000 maybe

  37. Chucky Powers says:

    Solid video: wasn't alot yet you held a magnifying glass to it… the title didn't go with the whole process…not a complaint but what is!


    air apa bang

  39. Prime 05 says:

    Have u cam got v force 3 reeds I would recommend getting them if u don’t

  40. حازم Hazem says:

    شكراً لك على الترجمه الى اللغة العربية

  41. HboskO says:

    did you ask " who is there" when the engine knocks? 🙂

  42. leo wagner says:

    Pretty girlfriend thumb immigrant culture incentive fewer union or.

  43. Juuso Lassila says:

    Sounds like a finnish name, "niemelä"

  44. Ricardo Molina says:

    recycled air compression

  45. Ricardo Molina says:

    and they're magnet compression

  46. Maurisa Hoggatt says:

    It's pretty clever instead of your cleaner going down the drain after you spray a little bit on the part you get to keep a giant tub of it. it might be a little dirty but I'm sure it's worth it

  47. Bob Wai says:

    Very crafty video that I've seen so far for an off road bike. By the way, can you guide me for where to buy top and bottom end rebuild hard ware for crm250 mk1?

  48. sonix freed says:

    you are THE REAL MECHANIC, say hayyy from indonesia

  49. andy b says:

    HAPPY HOLIDAYS ?? Shut the f up and MERRY CHRISTMAS YOU < . Great vid though . MAGA . TRUMP 2020 .

  50. Josh Kroczaleski says:

    That mag cleaner, can I just spray that on my motor while it’s still sitting on the bike or do I have to take the motor out

  51. YliVirittäjä says:

    Btw where i can get the oiler with the small nozzle?

  52. Badabing313 says:

    I like the use of blast cabinet for the washing, pretty slick and don’t have parts flying all over the driveway trying to pressure wash them. Gonna have to make a setup like this. You using hot water there?

  53. Tarmac 103 says:

    how to get views on a ordinary cleaing video… just say that it has engine knock even when you know there is no piston in it !!!!

  54. nathanz28 says:

    16:39 !😫😫💦💦

  55. Tuomas Virtanen says:

    Suomi perkele🇫🇮🇫🇮🇫🇮

  56. Dimitris Gialouris says:

    The tool in 15:05 how its named?

  57. italia543210 says:

    About to put all my shit in the parts washer too

  58. italia543210 says:

    My reeds are chipped too 🙁 hope my linkage bearings are good too

  59. Prime 05 says:

    My dad makes me reeds at his work

  60. Steven Wuill says:

    Whats in the cleanin tank and bucket i wana make my bike clean

  61. Werik Santana says:

    Good afternoon, I'm Brazilian. I'd like to get to know your workshop in the United States.

  62. ALEX MORGHAN # says:

    Hi sir…
    Actually my bike got an issue that when we ride at nearly constant speed I feel that bike is suddenly missed as like sparking is missing but at same time bike start and run
    ..and this happens again and again after 10-15 minute of interval of time…

  63. Moto Madman74 says:


  64. William Mickelson says:

    cameron niemela the only dude to buy 30 bottle of magwell cleaner and dump it in a bucket

  65. Jake Schmale says:

    How does someone not take care of a bike like that and let it go to shit? That's crazy!

  66. Иван Устимов says:

    Привет! Подскажите в какой жидкости моете?

  67. noel orourke says:

    Have you done a raptor 660 engine?

  68. UNEVEAGLE says:

    What liquid in the soak tank? It’s just soap and water or something else?

  69. Rohan Weekes says:

    You no somebody sale a yz 426

  70. Rotax 636nut says:

    Hey Cam watching this video of you work and play while I listen to the excellent choice of music has a mildly soporific and calming effect on me (even though I've been doing this kind of work myself for the past 40 years) I think it has to be something to do with the very clever and detailed editing that you invest in your productions, I have to say that you are very good at this, the whole thing is seamless and incredibly watchable. I'm glad I found you pal, better late than never!

  71. Smithereens says:

    Good stuff, great patience, love the remove, clean/repair, reinstall approach. Great filming.

  72. PhillipZX3 says:

    You should retitle this as "Watch me clean a bunch of parts." 😉

  73. Winston Alison says:

    I can work like this all day..love it..great job…☺

  74. Mark Lindsay says:

    Hey Cameron – hope you are doing well and staying STRONG. Just found your channel and love the content. Question about the pressure wash booth – is that a converted HF blast cabinet? Do you have any content for it creation?

  75. Carlos Perez says:

    Can anyone help me?? I have a 2 stroke yz 490 I was rebuilding and I kinda stripped a little of the threads not all but may be a few were the nut wont go in, I was thinking to cut of the mushed part and then threading it in to it since the cranckchaft magneto bolt is so long cameron or anyone give me advice? thanks I'm 14 btw

  76. s. mcchristy says:

    Click Bait

  77. Nadjib Kabouch says:

    wonderful work

  78. herryKACCO says:

    I like it,but there are no indonesian subtitles

  79. Bird dog Attebery says:

    Strong chemicals man! Get them parts clean! Environmentalist nightmare 😎

  80. gary tauber says:

    when they get old they are a pain in da arse to fix

  81. Rémi SCHAEFER says:

    hey !! wonderfull videos !! let's go for a long time behind my computer !! what kind of products do you use for cleening all your parts ? it looks be the magic product !!!

  82. Freedom Writers says:

    exactly how i am…do every little thing

  83. Clive Greenall says:

    Hi Cameron.
    Christmas 2018 is only a week away.
    Thanks for all the stuff you shared and the lessons. You make everything look so simple.
    I guess that's hundreds of hours of practical application.

    A very MERRY CHRISTMAS to your and your family.
    I pray your recovery continues.
    May 2019 be a positive, challenging and fulfilling year for is all.
    Regards from S Africa

  84. John Rivera says:

    Whats the best 2stroke mix to use that wont smoke.much

  85. Clouder says:

    Just wondering, when you take a bunch of bolts and nuts out, when you go to reassemble how do you know which ones go where? I'm talking about when you strip like a whole bike down. Do you have some way of organizing them? Or do you just know after years of working with bikes?

  86. Dean Naguib says:

    Hey Cameron, love your channel, quick question, how do you decide when the degreaser in the tank has reached its limit and time to change? And secondly, how do you dispose of that degreaser/water mixture? Cheers!

  87. Whoot County says:

    do you have a set of crankcase for an 1986 KX250 for sale

  88. Wes Harris says:

    Just found your channel & have been enjoying your content thanks !

    Completely amazed at how well the parts come up with some simple cleaning ! Awesome work…

  89. Satrio N says:

    Kalo knock di revive dong.

  90. Satrio N says:

    Kalo knock di revive dong.

  91. boardonfire4 says:

    What do u do for a living to afford all this

  92. boardonfire4 says:

    Magwill cleaner it sounds like ur saying mag well like as in magazine well cleaner witch I don’t think exists I honestly didn’t know what u were saying till I saw the bottle

  93. Otto says:

    What kind of grease are you using for the link bearings/kickstarter etc? Cheers and keep up the good work! Love your videos.

  94. Jackie LOL says:

    Do a timelapse engine build 😁

  95. Denni Driver says:

    У нас в России таких мастерских еще лет 100 не будет (((

  96. Götberg says:

    So sick🔥

  97. AnDrEw122100 says:

    Sounds like there’s no piston in it and the rod is slapping around inside the cylinder lol

  98. Logan Blake says:

    Bro you are awesome! Looking forward to your future videos man

  99. Sakari M says:

    Project idea after 250. Buy any bike and just clean it and make it like original

  100. M M says:

    Should have called the video watch me clean parts, clickbate shit

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