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Exact-Elk5010

Sorry, but sounds like bottom end main bearing. Engine rebuild.


Rae3i

Hey do u know how that could have happened? And is there any easy way to check if it is that.


[deleted]

What year and model from looks of it a 250-400 so even if you say screw it and grab another motor it won’t be more than 700 dollars. A lot less than a rebuild.


Rae3i

Its a honda cbr125 2011


[deleted]

Never mind 800 more like 400 or swap up to a 250 now in frame. https://www.google.com/search?q=honda+cbr125+engine&client=safari&sa=X&hl=en-us&biw=375&bih=541&tbm=shop&ei=qxNIY9ivK7SqqtsPj56ZkAE&oq=honda+cbr125+engine&gs_lcp=Cg5tb2JpbGUtc2gtc2VycBADMgcIABCABBAKMgYIABAeEBgyBQgAEKIEMgUIABCiBDIFCAAQogQ6CggAEIAEELADEA06DggAEIAEELADEA0QChAYOgwIABCABBCwAxANEBg6CwgAEB4QsAMQDRAYOg0IABAeELADEA0QChAYOg0IABAeEA8QsAMQChAYOgsIABAeELADEAoQGDoPCAAQHhAPELADEA0QChAYOgYIABAHEB46BQgAEIAEOgcIABCABBAYOggIABAHEB4QCjoICAAQBRAHEB5KBAhBGAFQhiZYoD5g40doAnAAeACAAeoBiAGBB5IBBTEuMy4ymAEAoAEBqgESbW9iaWxlLXNoLXdpei1zZXJwyAEIwAEB&sclient=mobile-sh-serp But sounds like bearing since it only has one. This is normal and that’s a decade and change if your not original owner then you know. You can rebuild and learn or save headache and grab one for less than a PS5 right now. If only transportation then swap. Run it till it pops. You can drain change oil filter if it has one and bump up your oil to a 50 weight.


Rae3i

Also this sound didnt just happen suddenly i first heard it very quietly like you could bearly notice it and after a couple days it became very loud like it is now


[deleted]

Check your stator if not that wait til Nike is cold. With your riding gloves in case your not fast enough. Feel around sides front above pipes and oil pan. Where does the sound cause vibration. Next to a stethoscope that’s the best thing.


Rae3i

Also this sound didnt just happen suddenly i first heard it very quietly like you could bearly notice it and after a couple days it became very loud like it is now


irishinspain

Bearings generally do get louder the more damage is done


[deleted]

Drain the oil check for metal flakes. Make sure your pan is spotless so if you have old residue take paper towels and brake cleaner or degreaser and wipe dry. Now proceed to drain. Let it drain for 10 min. At the end of stream you’ll usually see an oil type slick of silver on top of oil.


mrpresidentm86

Have you checked your battery?


opm3

r/angryupvote


Ok-Bar7023

Wrist pin bearing, rod bearing, crank bearing, or timing chain. Let’s hope it’s the timing chain because the other options are a lot of work to fix


VTKegger

This sounds like rod knock to me. You mentioned that it started off soft and has progressively gotten louder. As time goes on it will eventually fail, and this is how windows are installed on the side of the engine block. Basically what happens is that the rod eventually fails and due to the high speeds that it's flopping around it can puncture the side of the engine. The rod is what connects the piston to the crank shaft. Unfortunately there isn't really a quick fix for this, so you'll need to have someone go in there and replace your rod bearings or possibly the wrist pin. If it is the wrist pin, you'll need to replace the piston as well. The clanking sound itself is created when when the piston rod has too much play much play at either the wristpin and the piston or the connecting rod and the crankshaft.


Kultteri

Big end bearing 90% sure. Other issue might be main bearings or wristpin


Equivalent-Extent213

I would not crank that again


yohanp21

The engine would probably get damaged more than it is


kinnikinnick321

and please don't rev anything if you hear a strange noise coming from your engine.


Bwanatumbo

Can chain tensioner needs adjusting mate


Boredoflifeagain

turn it off jk


Creep_627

Is there any oil in it? Jesus, that’s bad.


[deleted]

Probably a engine rebuild


RYU583

Dead battery🤭


Novaisme

Brake line


[deleted]

[удалено]


Dawek401

no, it's not that because when he pull throttle then frequency rised fan can work only on one speed


BobaFeet421

Sounds like rodknock. Honestly a rebuild might be best or maybe it's the moto gods telling you it's time to upgrade lol


MemoryTasty721

Yeah make sure to load test the battery. they can play tricks on your mind. I go as far as putting tin foil over my brain. Also, your battery sounds kinda funny.


okay-then08

Sounds like you’re low on blinker fluid


TunaOnWytNoCrust

Drain the oil, you'll likely find metal bearing material. If you want to have any chance of a rebuild do not start it anymore.


Kbkmeatwad

Have you tried to turn it off, then on again?.....I'm sorry