Can A Dirt Bike Carburetor Wear Out?
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- Опубліковано 27 січ 2024
- Analysis of the wear points on a heavily used Keihin PWK Airstryker carburetor. I suspected this carburetor was worn out because the motorcycle it was installed on (Hard Times) ran extremely rich despite proper jetting and adjustment. This style of carburetor was used on the Honda CR250, Yamaha YZ250, Kawasaki KX250, Suzuki RM250, and many other 2 stroke dirtbikes from various years.
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“This isn’t a carburetor UA-cam channel” sir I think you should go count your videos that feature carburetors vs those that don’t lol 😂
HE: Reality can be whatever I want!
pretty much 100% of his videos feature his nose but that doesnt make it a nose channel...
@@cobravello453or does it? *Vsauce music starts playing*
@@cobravello453 🤣
Really liking this quick turn around, love watching you two. Keep the videos coming. ✌
I had a similar situation on my carburetor on my Honda express2, and I noticed that the carburetor jet is not removable from the factory. So what do you do when the needle and jet are worn? I’m thinking of buying a new one and see what happens.
This video sheds great light on an entire lifetime of rebuilding carburators and not understanding why certain carburetors still do not run right after rebuilding. Thank you very much for telling the time to solve one of the greatest mysteries known to the backyard mechanic.
Why aren't more youtubers like this!!!!! Genuine and authentic
Funny you thought this might be a dull video because I actually think it's one of your best. 😉👍
Carbies do wear out. Anything that has something moving, or moving in it, it will wear. You can't cheat physics.
Thanks for making your videos. :)
Have to admit I have never seen one as worn as this one.
Jake says he feels kinda silly. I can't imagine why. He is always so earnest and reasonable about everything. 😜 Thanks for the video Jenny& Jake !!!
My eyes and ears are being blessed with frequent content. This is glorious.
worn out needle bore, you are a genius sir.
That was simply great! There's a tip on carb's that I have never seen before. Excellent work Sir!
One of the main points of wear in those types of carbs is the emulsion tube (the part where the main jet needle slides up and down in) where it almost always gets over looked. People always go to the float needle and clogged jets. The slide itself as you’ve shown also 100% does and can wear out causing issues. Carbs can get to the point that not even extensive rebuilds can fix, because the body where the slide is eventually does wear out.
While watching the video I was wondering if a new emulsion tube and needle would fix the excess clearance and get the old carb working correctly.
The float pin hole is all wallerd out
I had an xr 250 carb with a worn out needle tube thing. I "rebuilt" the carb and never put that little tube thing in because it looked annoying to replace and and it didn't run great. Took it apart again and replaced it and it was much better.
@@tonyz2897On this type of carb, its called a needle jet. And it does , indeed , wear out, as does the needle.
I like all the videos….PLEASE keep it up this time lol
I don't know if the humor in your vids is better or the mechanical knowledge that you share. Love the channel even if you are doing less editing and perfectionism. I can't tell. 👍🏼
Great video! It is really not a choke, it's an enriching valve. A choke covers the intake chocking it off causing the vacuum to draw in more gas.
Thanks for this comment. I was questioning what I knew. 😅
No, it causes it to draw in less air 😅 with an enriching valve it draws in more fuel
Agree it is less air but it also draws more fuel. Ever use your hand as a choke.
@@HITANASG1
The choke lowers the air pressure, which encourages the fuel to vaporise better at lower temperatures.
@@dougharder6258 I have but I don't get your point. It's simple less air coming in for the same amount of fuel = richer mixture
This was so interesting! I had no idea that the wear could be like this. Great job explaining and showing this.
This hiccup at the end makes it all the more entertaining!
It's nice to see regular videos once again, glad you are back (or back-ish).
You can just replace the emulsion tube and needle
ive watched every video that you guys have ever made this is my first time commenting loving that your back making content your videos are so positive i really enjoy your bike content i hope you continue to keep uploading videos you and camera girl do a great job much love
Well,I believe Jacob showed that carburetors can in fact wear out.
You need not use a drill on the "don't take me out" screws. You need only go to your Internet and order a set of security torx bits. I got a set from the local Harbor Freight.
I have the same set although you have to thoroughly inspect each kit. The Chinese bits are not as quality controlled and if you look at the bits they are NOT all the same. Inspect the dot inside the security bit and some (more than makes me comfortable) are not in the center but are offset. Just have to inspect and be careful .
That was just a joke haha
I AGREE WITH YOU COMPLETELY. I had a 98 xr100 with the same problem. I changed all the carbies internal components and it didn't do anything. Replaced with a new one and it reved fully after that. Wish I kept the old one to test it like you have done. Thanks fro NZL
Lovin all the content lately. You guys rock!
I do infact surround myself with old worn out things. Love your videos.
every time I see a video from this channel I get so excited!
LITERALLY my favorite channel
cranking out the videos dude, love em
A pro with a perfect ending. Great job you two, really enjoyed this one.
Great video, Don’t sell yourself short. That tip over happens to lots of us.(shit happens) you could have edited that out, but u didn’t.Anywho, technically the carburetor didn’t wear out, the parts in the carburetor whore out. That pin is probably not the original one. Someone probably lost it, and put a pin in there they had lying around.those pins don’t shrink due to use.love your video’s brother. Keep them coming. 👍✌️
You know then he put the pin into old carb he did say that was the NEW pin not the old one that went ALL THE WAY DOWN.
So it was the hole was was now to big as well. not just the old pin that was damaged.
@@AAEmohawk I think you r talking about the needle pin. The pin I was talking about holds the float in. But what he also said that some people like to drilll the carb holes out , like the Jett’s u can’t trust what the size it says on the Jett, because someone may have micro drilled out the Jett. Who knows what was drilled out and what was just wore out. Anywho- the other carb made the bike run great.
They're back!! Thanks for uploading more! Always enjoy your content!
Interesting video aswell!
Love all the new content!
I don't have a bike because my finances don't allow but because of that I do enjoy watching these videos and learning for when I can afford a fixer upper
Excellent content !!! I’m having issues right now with a rich condition on my 2000xr100r. Oem carb was trashed I rebuild it all except needle collar seat and needle and this would explain why rich conditions continues! Ty I can’t wait to swap the needle and needle seat an see if That corrects it . Always love yalls content genuine down to earth folks !
I think you've done a great job, I've never seen the float retaining pin do that before, hard times has really come along way, maybe you can start calling it good times
I learnt this lesson a couple years ago. I have an arctic cat zr800 snowmobile that I was fixing up. PO broke tip off the fuel mixture screw for the idle circuit in the body of one carb. They are flat slides. Went and bought a used set took it apart to replace the body on the one carb. Unbelievable amount of wear. My old set looked virtually new compared to this set. People are always talking about slide wear but thats not where the majority of the wear occurs. Most of it is on the body itself. Specifically the runners which the slides run up and down on. Then it will leak air like crazy. Finally got lucky and got a used set cheap that wasn't completely worn out online. Easy way to tell with these flat slides is to shake them. If the slides rattle like crazy forget about it. My original LIKE NEW set was virtually silent when shook. The first replacement set rattled like a tambourine. Really a shame about the fuel screw. Can't blame the PO too much though. The fuel screw has such a fine tip on it and the spring you are screwing against is quite strong. I managed to figure out a way to set it so I am guaranteed not to break the tip off by counting how many turns it takes to get the screw to stop without the spring on from fully unscrewed. Then backing off the appropriate amount. Wish they would have stuck with round slides though. They last much longer than these flat slides. Damn the negligible improvement in throttle response.
The round slides can be honed out to over sized and sleeved, my old Triumph 750 has the round slides
Great Scott! Excellent find team, Thanks!
Camera girl is absolutely right! No need for any excuse for what you want to make a video about! Very interesting video, who knew carbs could wear out!
Love the video. Super helpful of carb diagnostics!
Very informative and fun to watch. Keep it up.
really enjoying the more frequint uploads!
Regular uploads have been awesome!
Great tip. Excellent investigation.
Great stuff 👍 loving the regular vids
probably one of the most informative videos to date
good work guys
slap hands!
Ive been working on dirt bikes for decades , thanks to you two , " an old dog can learn new tricks , your channel is awesome ❤❤❤❤❤❤
I love yalls videos so much always a highlight of my day loving the quick uploads
So glad to see videos coming in❤ your my go to UA-camr for fixes i have the same love for all bikes an machines as you guys !!!
You are my absolute favorite UA-camr- hands down. So awesome to see you again. Thanks for the great video. Very good findings on that old carb.
Not a dull and stuffy video, great detective work.
Keep the videos coming I enjoy watching them
Loving the more uploads!!
You guys are so cool. I wish you posted more. But also love the mysterious nature that comes along with the random post dates
Big Hello from Australia! Thanks for the videos. I watch them more so to see you guys, so even if it is carb vids then it is great. have a great week.
Always happy to see a new video coming out ❤
Its a great one too. I currently can't work on any motorcycles but with your videos I feel like I'd be standing in my garage and figuring out the problem myself. And I'm learning a lot as well! So thank you and keep up the good work!
This helped me so much, having carb issues with my old yz250, THANK YOU SO MUCH
This is my favorite carburetor youtube channel.
I think that was a great video. I am sure this will help someone else diagnose a problem they are having. Keep the content flowing.
I just love you two
My favourite UA-cam channel bar none.
Thanks for the intuitive vide and also leaving the last scene in, it helps people feel normal!
Love you too. Such a great combo. Thanks for another great video.
Ohh yeah, now it sound as it should!
Great video, as usual!!!
Love the recent stream of video activity. The wife and I love sitting down and watching you and your wifes adventures. Keep up the great work, your videos always brighten our day. ❤
Loved this video. Very informative on an issue not well known about. I watched your old KDX250 video that had the same problem and I used the knowledge for my KDX. Love the videos!!!!
I too was very interested in this video, apart from the times where I was bored
This video was very educational and i learnt new things. I may not need this knowledge now, but im sure some time on the way it will come handy.
Love the explanation. Carburators were always a problem for me...
Great video... you two have a great sense of humor...I always get a chuckle and I thought your carburator presentation was great!...the bike tipping over was a bonus... your reaction was great...please keep the videos coming!.. Thanks!*
Fantastic video!
Dude…..you’re awesome. I was surprised to see the new needle go into the old carb and see it not seat. I’ll definitely be including this as one of the items to regularly check when rebuilding carburetors on my various toys. Good detective work.
Love your videos! I've been watching since the lowes return generator!
Glad you like the videos!
Thanks man ! I never thought about that. Although im working on bikes(just for hobby) for nearly 10 years. Awesome !!
Very well explained, awesome!
Good job on the vocals
Awesome video! Thank you guys!
Love your videos, keep on wrenching!!
These are great informative videos 👍 thank you . 😊
I had mentioned the needle in your previous video. I was certain that was the problem. Glad you checked.
ALWAYS AWESOME GUYS! this video was great, seriously, I cannot remember how long it;s been that I have been watching ya'll but i feel I have gotten older so it must be a fairly long time. i watch a lot of vids while working. I think this channel has made me a better person in the way of , I am not the only one these things happen to. LOL.
Thanks for the vid! Oh man... I called the needle (kind of) under the previous video. I was talking about a worn out emmulsion tube (also called needle jet). Was reallæy hoping to get noticed :) I am really happy that you managed to fix the bike.
Holy shit pumping out some videos, we're here for it.
Yep it just wanted to be smack over lol. Sounds so great, hoping to see you ride it. Camera girl is great as always. You guys still remain my favorite since I was looking up a bike I had which was a 2002 yzf 426 that should say how long I have been loving every video you do.
Great video. The needle and tube get overlooked all to often. I find this very helpful for my snowmobile carburetors as well. Having over 30 carbs to keep clean, I'm into some every year.
Thanks Jake and Jen I am working on my snowmachine which I left sitting two years as last winter I lost the snowmachine in a snow bank lots of snow I went home to my Mothers and when I came back I wasn't sure where it was until march when it appeared regardless I have carburetor issues so off to the dealership to get new parts tomorrow! Always great to view your videos thanks for showing! Marc Gagnon
Thanks for filming
I appreciate the simplification of your videos. so many people get so into the weeds with their videos. you should try to put out more content if possible, I find you two refreshingly entertaining. for as few videos you put out, you have alot of subscribers. compared to other channels. good job and good luck.
Great video, some (me) may never think of this. I’ve been dealing with a rich condition on my rm125 no matter what jetting. I will investigate. Thanks and great video
Very informative video. also jets does get sloppier with time.
This is very helpful info. Thanks
Carbs can and do wear out especially where rods wear on bushings for throttle positioning and even choke levers etc. Jets not so much as long as you keep drill bits out of them and are careful when cleaning them. But dirty fuel can increase in diameter wear of the jet if there is enough dirt and crime that keeps going thru them. Bound to make the hole bigger with time. Even float assemblies will wear out. I concur on your assessments of wearing of parts. I see a new purchase in your future unless you can apply some heat and bend it back. And you know darn well what I am talking about too. Maybe even a new video of straightening out a bent clutch lever.
love seeing more videos
Great content
You are 100% spot on. I have seen this happen to a few bikes. It is usually the "forever" bikes that gets this kinda problem. i have seen it on Suzuki RMX, Kawasaki KDX and Gas Gas bike. The kinda bikes that just keeps on goeing and going and going. Way longer then any other bikes out there. And when the bike(s) just keeps on running the throttle gets twisted and the carb gets worn out. And i have argued with so many people because just about everybody thinks it`s the gasket "inside" the carb. Love all these videos you guys are posting. And love all the Gas Gas content even more. Cheers, and greetings from Norway :)
Can’t wait for this lovely couple to try a smart carb / lectron carb one day.😍
Good job love your videos
Great video
Amazing problem solving as always!
I work at a place in the fall, scaring and chasing people around with a chainsaw. Since I'm one of the most mechanically knowledgeable people with that chainsaw model, I have fixed up quite a few with the carbs completely worn down, some with the shaft that the flap sits on barely hanging on by a thread.
Awesome.. easily the best Loved Channel on You Tube... A Shot of Jennies garage is aways inspiring... (hairs looking good too a little longer)...lol
I had a certified Hondaechanic rebuild the top end of my 2004 CRF100 back in 2020. One of the things he did was buy a new carb because the fuel corroded the walls where the float needle sat to the point that the float needle wouldnt always move freely. Carburetors were not made to soak in caustic chemicals for many many years, which my poor dietbike did when i moved to suburbia for a decade.
In the snowmobile world, it’s very common for the float pin bosses to wear out on Keihin carbs. This will result in a rich condition because it slightly adjusts the float height. Even if you adjust the tab on the float, it will always be out of adjustment due to vibrations. The Mikuni carbs don’t seem to have this issue.
perfect video for the subject/context. great ending too :)
Wow , very interesting and informative, I learned something ,as always wondered why some carbs go bad, but now I know what to look for, thanks. Love your calm and easy going nature …..great content too. Don’t forget to check the power valve assembly ! 🏁🏁🏁😊