I sold these through my dealership 15 years ago. Nice peppy v-twin, they sold a standard sport, sport, and cruiser with the same engine. Nice find on the woodruff key. The fuel pumps were known to fail over time. Parts can still be sourced from South Korea, the company is still in business.
Just to chime in, a lot of the classic bikes have difficulty finding intake boots. they stopped producing them in korea about 4 to 5 years ago so a lot of potentially very good bikes are getting scrapped because people can't fix vaccum leaks and the like.
I've never understood people who enjoy riding bikes but don't want to learn how they work. It's not that hard. Just start on simple things and work your way up. Get a work shop manual for your bike. And nowadays, with the internet It's even easier. There's no reason why you can't learn. Start on something other than a honda, though. They often a little harder to work on.
@@moderate3 you have to have more mechanic skils than ride skils to ride chinese junk.... and of course they dont have any parts so everything gets worst if you break it you got to adapt or put generic chinese repairs for a generic chinese bike ajajaja
That's a steal. I flip Hyosungs here in Australia. Easy to fix. Very cheap aftermarket parts. Cheapest one I bought was $300. Sold the other day for 2100. Rob, Cairns, Down Under
For $150 I don't care what the brand is! It's a cool looking little bike and with a little knowhow a great economical mode of transportation! A great looking little cruiser perfect for around town or a leisurely cruise on some back country roads! Awesome find! Wish I could find something like that!👍
And I agree, he's very good at no nonsense troubleshooting, easy to watch, and makes it really easy to learn and pick up a few easy tips! Great content 👌
@Joe it's been fun watching your skills improve since the days of working in your parents garage you have come a long way! As well as your channel I look forward to each and every video another great job keep em coming 😊
I have the big brother to this , a gv650 Aquila here in the states. I think I have a video of mine buried in my YT channel. It has a *Similar* engine in it as the Suzuki sv650. It's rated at 75hp and it's a Absolute friggen rocket! Mine uses a Mikuni EFI setup on it. I test rode one of these 250cc's a few years before I bought mine. They were a pretty fun bike that would be awesome around town. These usually are pretty reliable but they were cheaper bikes and cheap bikes get neglected. Good job getting it figured out.
I have two 1983 Gold Wings that need repaired. I can't find anyone willing to work on them, I had my neck and back fused and can no longer do the work myself. I can still ride , but without someone to do the repair I guess I'm going to have a long wait. I just turned 70 this month and hope I can find someone like you in my area. I enjoyed your video. Look forward to the next one.
I found a great mechanic finally after being screwed by the one guy I could find. They actually work on goldwings too. Costa Mesa ca. not sure where you are?
Pretty cool looking bike! Did not expect to see it running at the start of the video. Really exciting to follow you through the process of troubleshooting and diagnosing. Excellent display of skills and knowledge. Cheers from Sweden!
@@rickwardenaar2639 You're not going to bend a rod with bad ignition timing trust me I'm a 30-year license small engine technician you're not going to bend a rod with bad ignition timing
Pump failed, letting gas into the cylinders though the vacume line, which hydrolocked it. Owner tried to start it, and then the woodruf key broke because of the hydrolock.
Woodruf key is holding only the flywheel, so it was not the reason. Kickback on the other hand could do that, but what’s older an chicken or an egg. Hole in the carb caused by bad timing - consequence. But hydrolocking might explain why that tooth was broken on starter gear.
As I'm watching around 57:12 I could smell the gas remembering the time when I worked on small engines like Rebuilding a Mac-9 from my go-cart 60s 70s. or my Volkswagen bug pulling engine out and rebuilding. fun dayz kept me busy. Great job on the diagnosis and repair.
I love watching you figuring it step by step and very clear although I don’t really understand about motorcycle engines but got interested watching you on how u figure and fixed the problem.two thumbs up bro!!
Hyosung is Korean. They weren't bad bikes. Hyosung is a huge conglomerate that makes all sort of industrial stuff. The most common Hyosung thing you probably run in to in your day to day life is Hyosung ATMs.
I taught "the course" in CO. We had a fleet of Suzuki GZ 250s. I always called them the Chee Zee 250. Those fenders look super heavy but they are plastic. They ran OK. The front breaks were AMAZING. If all else fails, you should be able to rig some Cee Zee parts on there.
This video really settled it for me I watch your videos because you remind me of myself when I was young and when you took this bike out across the field and over the grass and adult through the ditch 💯👍👍👍👍👍
You make all this look so easy. If I were to try fixing mechanical anything I’d have holes all in the garage walls where wrench’s would be thrown at them.
nothing in comon with the suzuki engine - this is only a 250 - they also have an 125 v-twin and of course the 650 which many thinks is the same as the suzuki - it isnt - but the gt model dooes look a lot like the original sv 650...... Owned the gt version with this engine - nice little engine..
Great video and troubleshooting. Had this happen to me on an IT200 Yamaha. While riding with some friends I dumped the bike climbing a hill. The engine revved up I jumped up grabbed the clutch, chopped the throttle and stood the bike up maybe too soon sheering the woodruff key. Quick tip: always leave the key to the tow vehicle with the vehicle.
I’ve never worked on one of these bikes but I’ve tangled with a few of those little off brand Chinese 4 wheelers before. The biggest problem is finding parts for them if something is actually broken but most of the time it’s just a dirty carb or bad wiring that sidelines them. Their power and overall quality is never gonna impress anyone that has rode Hondas or Yamahas and they’re not worth a lot but if you can get them dirt cheap like this they can be fun little machines without having to spend name brand money. Nice grab Joe! 👍
The quality of some Chinese brands like Cfmoto have come a long way. I picked up a CFORCE 600 ATV and I love it. I’d love to see you pick one of these up and tinker with it. Love your videos!
Hahah I just finished rebuilding a Hyosung ez100 moped, nearly everything on it was a copy of a Suzuki address, once I worked out what it was a copy of parts became so much easier to source
Hyosung was one of the major parts manufacturers for Suzuki. Some corporate/political drama happened. Suzuki didn;t realize they had sold the rights to manufacture the parts AND the rights to use them to Hyosung. When the drama happened, Hyosung said "screw this" and started making and branding the bikes for themselves instead of taking a bad new deal from Suzuki. The Frame and a few accessories are bike specific but 90% of the parts are from various models from Suzuki. After a few years Suzuki and Hyosung made up and now they are partners again.
I thoroughly enjoyed this video of how meticulously you sorted out each problem one by one. I am never that lucky to find a deal and If I do, it usually does not have a title with it. Awesome. I would recommend getting a IV drip stand and a fuel bottle for tests like that. It works a lot better and much safer.
After watching enough of your videos, I've now invested all my money into starting up a Tungsten and Inconel woodruff key manufacturing plant. The number of sheered keys I've seen you deal with has me sitting on a gold mine! 😄
Love it when you get lucky! Glad I tuned in today because I’m having the exact same issue with my bike (crank, no start, sputtering, backfiring).. Pulled carbs and clean as a whistle. Got good spark. I heard clicking from 42 year old cdi, so figured it had tapped out. I ran out of daylight today, but thanks to you I’ll now investigate woodruff key and cam chain. Thanks for sharing your knowledge 👍
Take a look at the Chinese made equivalents. Their engines can be even smaller. If it were mine I'd strip all the flash tat off it, paint it black and turn it into a 'bobber'.
I’m sure I’m not the first person to say this, I’d be surprised if I was. Get yourself a set of Vessel JIS screwdrivers. They are amazing for working on Japanese bikes and Japanese parts. The JIS screws have a dot on the top, and have a different pitch to a regular Phillips head. Means you don’t strip the screws, and get a better seal to break them on disassembly.
@@bertsmith5569 incredible that a Korean manufacturer uses mass produced Japanese screws in their manufacturing. Almost shocking. Almost like it's.. Cheaper and easier to get them relatively locally
@@RatAndRaven Get it right mate. Hyosung manufacture Suzuki engines under licence from Suzuki to use in Hyosung motorcycles. So yes, they do use suzuki engines, but are allowed to manufacture those themselves, with Suzukis permission. The 650 version of this bike uses the SV650 engine. This was common knowledge within the motorcycle industry during the early 2000's
Woodruff keys are not designed to take the full torque, just for positioning. The taper is supposed to take the torque and impulse forces, but that only works if you install the taper with the surfaces dry, and bolt torqued up properly. Otherwise it will happen again....Seen this many times on our 50 cc mopeds
Congratulation for your wonderful purchase and skilled troubleshooting and repair! FYI Hyosung is a Korean made motorcycle, not a Chinese one. It used to be a value leader cca. 10 - 15 yrs. ago, and thus popular with beginners. As you have experienced, a lot of them have been abandoned, mainly due to lack of expertise to repair.
Thank you, I am learning so much from your videos. Been following for a long time - enjoyable, instructive and demonstrates an analytical approach as well as good hand skills. Wish you every success. Regards, Phil, Suffolk U.K.🇬🇧
Unbelievable! I can't believe you were able to pick this cool bike up for $150! I dig these little Hyosung Cruisers. 2 tons of fun on a lazy Saturday! This is a case of big time talent... really paying off. Congrats... on the talent... and the bike! Awesome stuff.
Good score, Joe! Took a bit to get the fuel system sorted out, and fixing the flywheel key which did the trick. Hopefully, you can find a parts source for the fuel pump to fix the diaphragm. It will run better when you get the airbox back on it with a filter in it. Thanks man, great video!
Man really enjoy your show. Worked at a motorcycle salvage shop here in TN for years. The owner would want to part stuff like this out,but I would take it to the back and have it running when I had time.
Oh wow, this was my second bike back in the early 2000's. We had a Hyosung dealer in my town, and I financed $3500 for it brand new because I was poor, but really wanted to ride. Thanks for the memories!
Chinese bikes tend to suffer from poor electrics and switch gear problems, often just down to the quality of components. The engines tend to be pretty robust and reliable. By sorting out these problems, which is not difficult you can end up with a good, usable and reliable bike at a modest cost. Just my experience from Chinese based bikes.
I do know very well that this particular brand is not Chinese. Many people assume that all motorcycle brands from Asia are Chinese manufacturers, which of cause they are not. What I was aiming to say was not all these bikes are terrible, they just tend to require a bit more maintenance than say Japanese motorcycles. Kind Regards👍
@@lesoram6236why are you telling people China and South Korea are different countries? Do you think everyone else is that dumb? Saying that makes you sound like a douche
Each cyl looks like a 250cc single. I looked at those when they were selling them here at a local shop. Seemed decently built. Looks heavy as heck, gonna be a real turd of a performer I'd reckon. Hyosung is a HUGE company. There are plenty of parts.
Joe, Do you know that Harbor Freight sells aluimium Welding rods that You use a LP torch to weld with. Ive seen them in use and they work great. God Bless
when you see a key like this before assembly it is good practice to put some lapping compound on the shaft and flywheel and lap it so the surfaces blend better. The key is there for alignment, friction and nut torque hold it in place.
It's not the same thing. The "spark tester", not "spark-plug tester" is made to simply put inline so you can see if the bike has spark without pulling the spark-plugs out. It's a diagnostic tool to see if the motorcycle is producing spark, not the spark-plug. 👍🏼
You are a frickin wizard dude . I think you're the very best mechanic on RUclips. There's not even a close second. Your camera work camera angle explanation it's all excellent there's nobody I enjoy watching more than you rip up any engine you're diagnostic is mind-blowing congratulations on a great show everyone knows you could be doing about a hundred different things in your life I'm glad I'm getting a chance to watch you work on every oddball and common piece that you find
Technically, Mustie1 is the "best." Darren is unreal what he can get running right quicd, he gets it to basics, gets it farting with a squirt of fuel, to prove spark and whatnot is ok before he worries about the carb, fuel pump and tank. That would tell him about the spark and the timing. He would have been at the timing well before he screws with the carb and whatnot. Usually the tank is the last thing he worries about.
@@zincfive ...sorry but the best of the best is over here in England...Allen Millyard from Berkshire (see RUclips channel)...he builds engines from multiple crank cases and welds them together...makes five cylinders and sixes out of threes and fours...world renowned engineer...but this guy is a great mechanic also...Hyosung south Korean flawed 2wheeler definitely came home to the right man...diagnosed every fault and repaired it or work around...i'll try to remember to follow this channel...there's so many repair channels you tend to forget quickly...we have a few over the water in Britain...some skills/talent in the world luckily...wish i had a bit more...and workspace
Had one of these.. was a pretty good bike. Top speed a but limited.. But was a GREAT city bike, and for slower country roads. It was LIGHT, and had a low seat height which I needed at the time. Really a nice little machine. Parts are readily available.. and there is a decent online community to help you sort out little things.
For what it is…….i don’t hate it! I live a mile out of town in the country and i only have a 1.5 mile drive to work so I have been looking for a little virago 250 or something terribly small and fuel efficient to putz back and forth to work. I’d have given him $150 for it in a heartbeat 👍
@@jayjudd6518 not to sound arrogant, but yes I’d have figured that out. I fix old stuff up like Joe, just not on the scale he does. It’s a side job/fun hobby for me I guess, I like haggling with people to get the best price and figuring out why they won’t run. I don’t drink or date anymore so a guys gotta do something with his time u know! 🤣
Joe, the spark plug tester is so you can just pull the plug wire off and insert that in line so you can test for Spark without pulling out the spark plug. Good tool to have for future use. I've been using them for years.
I think it’s just a general term. When someone says something is made in china it might not actually be made in china, but it might as well be lol because it’s just as poorly made. Anything that comes out of South America is usually crap (besides Japan of course)
Love your videos! Very informative. Plus I like how you are family friendly and don’t have cursing. I like to watch with my boys! Keep up the great work!
Actually, Hyosung is a South Korean company, not Chinese. I have always removed and bypassed the kickstand and clutch "nanny" switches on every bike I've ever owned, including brand new ones. Completely unnecessary garbage that WILL leave you stranded, especially if you don't know it's there, or don't know how to bypass it. I wonder what else those Mikuni carbs were used on. I have never seen a Mikuni carb like those before. Could be a one off, like the super weird siamesed Keihin carbs on my Kawasaki Vulcan 750. It's obvious someone left ethanol in it. That's what caused all that corrosion. I use 20w50 oil in ALL motorcycles. Once I discovered the timing was off from removing the rear valve cover, I wouldn't have even bothered removing the front cover. Never saw a "wood rough" key break that cleanly before. You don't have an auxiliary fuel supply bottle to hang from the handlebars? Did you check the valve clearances while you had the covers off? Slightly tight valves can cause a low compression reading, and IMO there is too much difference between front and rear compression. Front rings could be stuck from sitting. But hey, it runs.
I have a question maybe you can help me out I have a 2004 Yamaha v Star 1100 when I’m at quarter throttle it runs extremely well. But when I want to rev it from quarter throttle to a full throttle, the engine loses most of its power but revs up just fine. Then after a couple seconds it seems to gain power again and is fine. Under a quater throttle it runs perfectly but it almost seems like it’s loses power at full throttle for a bit.
Clutch might be slipping/worn clutch discs.. If you haven't had any carb or fuel issues & it revs up just fine in Neutral without any sputtering. It might be the clutch. Test: While going 25- 30mph in 2nd gear try shifting straight to 5th (or 6th) and give it gas. If the rpms go way up, without picking up any speed and the problem seems even worse. Than when normal shifting. It's most likely a slipping clutch.
You did an amazing job, honestly. I rode a GV650 and anything sounded wrong, it was back to the shop. Hyosung still send me parts catalogues, here in Australia. Send them an e-mail and they’ll gladly e-mail you a catalogue. Again great job!
Love your videos Bud, one thing, if it says prime on the fuel petcock, then it's a gravity feed to the carbs. Just use it to fill the float bowls, and run the machine using either On, or Res. Don't be tempted to run on prime. Good buy tho, well cheap. 👍👍
they are common here in Oz (Australia) the Hyosung. Real cheap, not bad bikes at all for the price. $150? Such a sweet deal Joe! Love your vids mate.. :)
I have personally owned 5 of the GV250s. There is a "unused" connector in your wiring near the fuel pump. This connector gets 12v constant when ever the key is on. The GV250 and GT250 used the same harness but the GT (and later year GV) has an electric fuel pump. I changed out all the vacuum fuel pumps for external electrics. You got super lucky with the timing issue. I had a parts bike with a cracked piston from the spark triggering at the wrong time. If you need to rebuild the carbs in the future, pay attention to the jet sizes, the front and rear are different and if you decide to delete the airbox and use pod filters you will need to step up a size on the jets. For the love of bikes, do not drill out or straight pipe the exhaust. The engine NEEDS the back pressure and you will burn a valve on the rear and lean out the front to melt a piston. I had a brick of an engine come into my shop because of the owner cutting the exhaust.
If you have good compression means the valve timing is good or close. That pushes it to the flywheel key. They mod these new carb jets, air filter pods and a change to the exhaust baffles. Try lowering the slide needle clips to lowest groove first.
@@billycarpenter4740True. When I was a kid my brother's very first street bike was a Honda Rebel 250. It was totally gutless, but it provided a smooth beautiful ride until he hit a dog on it. 🤷🏻♂️
@@stkyfngrszmooth As a kid back in the early 1970's I had both a Suzuki TS 100 and A Suzuki TS 250 . Both were good street/dirt bikes for getting around locally, the 250cc being enough to get up to highway speeds and driving out for hours. Maybe not 750cc bikes but enough to have fun with and ocassionally carrying a buddy along. With age now I'm alot more into the "slow and go" pace to see whats along the way as I travel here in central Florida.
Hiya bud, big fan of your show. I think the motor hydrolocked on you first start up after you serviced the motor, The fuel pump filled up a cylinder and when you cranked you could hear the starter stall. That was your fuel on the floor. It was clear on the video but bent over the bike would be a different matter. Its just my idea that's all mate. Keep on keeping on.
I sold these through my dealership 15 years ago. Nice peppy v-twin, they sold a standard sport, sport, and cruiser with the same engine. Nice find on the woodruff key. The fuel pumps were known to fail over time. Parts can still be sourced from South Korea, the company is still in business.
Just to chime in, a lot of the classic bikes have difficulty finding intake boots. they stopped producing them in korea about 4 to 5 years ago so a lot of potentially very good bikes are getting scrapped because people can't fix vaccum leaks and the like.
Peppy, yea na
I rode Honda's for 35 years and could never do what you just did. HUGE kudos! What a smart young man you are!!!
I've never understood people who enjoy riding bikes but don't want to learn how they work. It's not that hard. Just start on simple things and work your way up. Get a work shop manual for your bike. And nowadays, with the internet It's even easier. There's no reason why you can't learn. Start on something other than a honda, though. They often a little harder to work on.
You probably wouldn't have to with your Hondas.😂
The kid is money
To ride chinese you have to be rich and smart
@@moderate3 you have to have more mechanic skils than ride skils to ride chinese junk.... and of course they dont have any parts so everything gets worst if you break it you got to adapt or put generic chinese repairs for a generic chinese bike ajajaja
That's a steal. I flip Hyosungs here in Australia. Easy to fix. Very cheap aftermarket parts. Cheapest one I bought was $300. Sold the other day for 2100. Rob, Cairns, Down Under
I love your step by step analysis until you finally solve the problems. Great job!
Love watching your motorcycle videos. Your knowledge, patience and ability to troubleshoot is amazing. Thanks for sharing, great work!
For $150 I don't care what the brand is! It's a cool looking little bike and with a little knowhow a great economical mode of transportation! A great looking little cruiser perfect for around town or a leisurely cruise on some back country roads! Awesome find! Wish I could find something like that!👍
And I agree, he's very good at no nonsense troubleshooting, easy to watch, and makes it really easy to learn and pick up a few easy tips! Great content 👌
@Joe it's been fun watching your skills improve since the days of working in your parents garage you have come a long way! As well as your channel I look forward to each and every video another great job keep em coming 😊
150 bucks, people spend more on Amazon in 30 seconds than 150 bucks. Nice purchase Joe!! How’s Vinnie!! Great Video Thank You 🙏
I spend 150 in shipping alone frequently
I have the big brother to this , a gv650 Aquila here in the states. I think I have a video of mine buried in my YT channel. It has a *Similar* engine in it as the Suzuki sv650. It's rated at 75hp and it's a Absolute friggen rocket! Mine uses a Mikuni EFI setup on it. I test rode one of these 250cc's a few years before I bought mine. They were a pretty fun bike that would be awesome around town. These usually are pretty reliable but they were cheaper bikes and cheap bikes get neglected. Good job getting it figured out.
It's a Mikuni 14-224 dual square fuel pump. On Amazon for $32
I have two 1983 Gold Wings that need repaired. I can't find anyone willing to work on them, I had my neck and back fused and can no longer do the work myself. I can still ride , but without someone to do the repair I guess I'm going to have a long wait. I just turned 70 this month and hope I can find someone like you in my area. I enjoyed your video. Look forward to the next one.
maybe share what area that is? we bikers are always willing to help out
@user-un8yt9gd1t you can find them just have to look
ik woon in Nederland maar anders
I found a great mechanic finally after being screwed by the one guy I could find. They actually work on goldwings too. Costa Mesa ca. not sure where you are?
We had an old feller that his whole business was goldwings. They are a different breed to work on. He’s gone now. Too bad.
Pretty cool looking bike! Did not expect to see it running at the start of the video. Really exciting to follow you through the process of troubleshooting and diagnosing. Excellent display of skills and knowledge. Cheers from Sweden!
You would never have bent a valve as the flywheel does not determine camshaft timing The flywheel only provides the timing for the spark
No, but bad ignition timing can cause rod and bearing damage.
@@rickwardenaar2639 You're not going to bend a rod with bad ignition timing trust me I'm a 30-year license small engine technician you're not going to bend a rod with bad ignition timing
@MrATOMBOMB420 You're 💯% right. Since it doesn't affect the timing chain at any point, it's impossible to bend any valves.
@@MrATOMBOMB420 What if the spark sets off the AF mixture before TDC? Seems like it could do the same damage as detonation.
@@bertsmith5569 If it sets the air fuel mixture off early you're going to get pre-detonation pre-detonation will not bend a rod
Pump failed, letting gas into the cylinders though the vacume line, which hydrolocked it. Owner tried to start it, and then the woodruf key broke because of the hydrolock.
That's most logical idea what happened kicked back broke gear and key.
I was trying to figure out why the keyway was broken. Those don't just snap in half for no reason.
Woodruf key is holding only the flywheel, so it was not the reason. Kickback on the other hand could do that, but what’s older an chicken or an egg.
Hole in the carb caused by bad timing - consequence.
But hydrolocking might explain why that tooth was broken on starter gear.
Hydrolock can bend connecting rods just saying
It was hydro locked when he first tried to start it.
As I'm watching around 57:12 I could smell the gas remembering the time when I worked on small engines like Rebuilding a Mac-9 from my go-cart 60s 70s. or my Volkswagen bug pulling engine out and rebuilding. fun dayz kept me busy.
Great job on the diagnosis and repair.
Have had a lot of them here in the UK, they are the better one of the Junk Brands. Some folks love them
You got the deal of the century...enjoy this bike
I’m surprised the starter motor didn’t burn out!!!
It will probably have a very short life.
I love watching you figuring it step by step and very clear although I don’t really understand about motorcycle engines but got interested watching you on how u figure and fixed the problem.two thumbs up bro!!
Hyosung is Korean. They weren't bad bikes. Hyosung is a huge conglomerate that makes all sort of industrial stuff. The most common Hyosung thing you probably run in to in your day to day life is Hyosung ATMs.
Algo parecido con Hiunday
180psi compression wow! Must have 12:1 compression ratio. A 250cc engine that performs like a 500. Great job sorting out all the problems. ❤❤
Those spark testers work great. Bought a pack of 6 off ebay for cheap. They are very convenient!
I taught "the course" in CO. We had a fleet of Suzuki GZ 250s. I always called them the Chee Zee 250. Those fenders look super heavy but they are plastic. They ran OK. The front breaks were AMAZING. If all else fails, you should be able to rig some Cee Zee parts on there.
Great video Joe watching from Edinburgh Scotland UK 🇬🇧
@@CawKeemy 2014 250cc chinese supermoto still has a carb lol 🏴
@@rintin1874 am from Glasgow 👌
Perth. I should be out riding my bike in the sunshine, not lying about the house looking at RUclips.
from my mums hole in N Devon 😂😂
Also from Edinburgh more into the Scooter scene but love watching this guys vids
This video really settled it for me I watch your videos because you remind me of myself when I was young and when you took this bike out across the field and over the grass and adult through the ditch 💯👍👍👍👍👍
You make all this look so easy. If I were to try fixing mechanical anything I’d have holes all in the garage walls where wrench’s would be thrown at them.
It's Korean and the engine design should be licensed from Suzuki.
nothing in comon with the suzuki engine - this is only a 250 - they also have an 125 v-twin and of course the 650 which many thinks is the same as the suzuki - it isnt - but the gt model dooes look a lot like the original sv 650...... Owned the gt version with this engine - nice little engine..
What he said.
Definitely Korean. I'm here in Korea.
I'm willing to bet Koreans watching this video aren't happy campers😅😂
Bikes made in China would have fallen apart before you got them home!
@@csigouin1I did 3 tours in Korea.
Great video and troubleshooting. Had this happen to me on an IT200 Yamaha. While riding with some friends I dumped the bike climbing a hill. The engine revved up I jumped up grabbed the clutch, chopped the throttle and stood the bike up maybe too soon sheering the woodruff key. Quick tip: always leave the key to the tow vehicle with the vehicle.
I’ve never worked on one of these bikes but I’ve tangled with a few of those little off brand Chinese 4 wheelers before. The biggest problem is finding parts for them if something is actually broken but most of the time it’s just a dirty carb or bad wiring that sidelines them. Their power and overall quality is never gonna impress anyone that has rode Hondas or Yamahas and they’re not worth a lot but if you can get them dirt cheap like this they can be fun little machines without having to spend name brand money. Nice grab Joe! 👍
Agreed!
The quality of some Chinese brands like Cfmoto have come a long way. I picked up a CFORCE 600 ATV and I love it. I’d love to see you pick one of these up and tinker with it. Love your videos!
Hahah I just finished rebuilding a Hyosung ez100 moped, nearly everything on it was a copy of a Suzuki address, once I worked out what it was a copy of parts became so much easier to source
Did you find that Suzuki parts actually fit?
Hyosung was one of the major parts manufacturers for Suzuki. Some corporate/political drama happened. Suzuki didn;t realize they had sold the rights to manufacture the parts AND the rights to use them to Hyosung. When the drama happened, Hyosung said "screw this" and started making and branding the bikes for themselves instead of taking a bad new deal from Suzuki. The Frame and a few accessories are bike specific but 90% of the parts are from various models from Suzuki.
After a few years Suzuki and Hyosung made up and now they are partners again.
@@pb222221 cool thanks for the backstory brother!
I thoroughly enjoyed this video of how meticulously you sorted out each problem one by one. I am never that lucky to find a deal and If I do, it usually does not have a title with it. Awesome. I would recommend getting a IV drip stand and a fuel bottle for tests like that. It works a lot better and much safer.
Even if its a wall hanger that thing is sweet.
Good lookin little cruiser, reminds me of a rebel 250
After watching enough of your videos, I've now invested all my money into starting up a Tungsten and Inconel woodruff key manufacturing plant. The number of sheered keys I've seen you deal with has me sitting on a gold mine! 😄
Great video Joe! Your a very good mechanic!!!
Love it when you get lucky! Glad I tuned in today because I’m having the exact same issue with my bike (crank, no start, sputtering, backfiring).. Pulled carbs and clean as a whistle. Got good spark. I heard clicking from 42 year old cdi, so figured it had tapped out. I ran out of daylight today, but thanks to you I’ll now investigate woodruff key and cam chain. Thanks for sharing your knowledge 👍
Maybe my eyes are playing tricks on me, but that bike looks Huge to have only a 250cc engine in it.
I thought the same thing.
Big cylinders for a 250.
That’s why they top out at 70 mph even with 2 cylinders
Take a look at the Chinese made equivalents. Their engines can be even smaller.
If it were mine I'd strip all the flash tat off it, paint it black and turn it into a 'bobber'.
Honda had a twin 250cc forget the model
I was thinking the same thing
I’m sure I’m not the first person to say this, I’d be surprised if I was. Get yourself a set of Vessel JIS screwdrivers.
They are amazing for working on Japanese bikes and Japanese parts. The JIS screws have a dot on the top, and have a different pitch to a regular Phillips head.
Means you don’t strip the screws, and get a better seal to break them on disassembly.
Korean made since the 70s with some having suzuki sourced engines.
Mustie 1 pointed that out about his one a few months ago
They've never used Suzuki engines. Suzuki used hyosung as a designer and builder for many of their bikes.
Saw quite a few JIS screws on that bike.
@@bertsmith5569 incredible that a Korean manufacturer uses mass produced Japanese screws in their manufacturing. Almost shocking. Almost like it's.. Cheaper and easier to get them relatively locally
@@RatAndRaven Get it right mate.
Hyosung manufacture Suzuki engines under licence from Suzuki to use in Hyosung motorcycles. So yes, they do use suzuki engines, but are allowed to manufacture those themselves, with Suzukis permission.
The 650 version of this bike uses the SV650 engine. This was common knowledge within the motorcycle industry during the early 2000's
Woodruff keys are not designed to take the full torque, just for positioning. The taper is supposed to take the torque and impulse forces, but that only works if you install the taper with the surfaces dry, and bolt torqued up properly. Otherwise it will happen again....Seen this many times on our 50 cc mopeds
And a free Spark Pug Tester for you purchase. lol
so technically Bike cost 145.99!
Sweeten that deal!
Congratulation for your wonderful purchase and skilled troubleshooting and repair!
FYI Hyosung is a Korean made motorcycle, not a Chinese one. It used to be a value leader cca. 10 - 15 yrs. ago, and thus popular with beginners. As you have experienced, a lot of them have been abandoned, mainly due to lack of expertise to repair.
When we don't hear the top names in motorcycles, then we always think it's Chinese. Good thing you spotted those mikuni carburetors 👍
Thank you, I am learning so much from your videos. Been following for a long time - enjoyable, instructive and demonstrates an analytical approach as well as good hand skills. Wish you every success. Regards, Phil, Suffolk U.K.🇬🇧
I got put on one of those when I took the MSF course; I hated the forward controls...
Enjoy your videos so much. And I learn a lot also. And your camera work and editing are amazing. Thanks, Joe.
Unbelievable! I can't believe you were able to pick this cool bike up for $150! I dig these little Hyosung Cruisers. 2 tons of fun on a lazy Saturday! This is a case of big time talent... really paying off. Congrats... on the talent... and the bike! Awesome stuff.
Congrats on the win. Beautiful cruiser 👍
It's definitely much better than a Chinese make, it would be really rusty on the frame. 👍
Good score, Joe! Took a bit to get the fuel system sorted out, and fixing the flywheel key which did the trick. Hopefully, you can find a parts source for the fuel pump to fix the diaphragm. It will run better when you get the airbox back on it with a filter in it. Thanks man, great video!
Hyosung is a South Korean brand, not Chinese 0:22
Excellent repair mate - cheers from Australia! That hole in the carby was probably from someone having issues trying to lever out the airbox.
I can't believe he got it for 150 bucks.
Unbelievably good deal.
There's lots scrapped with water in the tank
That's what busting @$§ will get you. Never underestimate the luck of the consummate hustler.
Man really enjoy your show. Worked at a motorcycle salvage shop here in TN for years. The owner would want to part stuff like this out,but I would take it to the back and have it running when I had time.
You should consider a lift table to make your life easier.
Essential for working on bikes, James Condon the generator man, uses one to lift his generators
That's not quite right. You only need a bike lift if you work on bikes frequently!!😮😂
Idk why he doesn’t invest in one. It’s his full time job. It’ll save his back
@@alanrichardson1672 Joe doesn't work on bikes frequently??
Even a vehicle scissor type lift. He could do utvs, atvs and possibly motorcycle as is or with little modification.
Oh wow, this was my second bike back in the early 2000's. We had a Hyosung dealer in my town, and I financed $3500 for it brand new because I was poor, but really wanted to ride. Thanks for the memories!
WAY TO GO JOE WE'RE ENJOYING YOUR SHOW!
Chinese bikes tend to suffer from poor electrics and switch gear problems, often just down to the quality of components. The engines tend to be pretty robust and reliable. By sorting out these problems, which is not difficult you can end up with a good, usable and reliable bike at a modest cost. Just my experience from Chinese based bikes.
I do know very well that this particular brand is not Chinese. Many people assume that all motorcycle brands from Asia are Chinese manufacturers, which of cause they are not. What I was aiming to say was not all these bikes are terrible, they just tend to require a bit more maintenance than say Japanese motorcycles.
Kind Regards👍
@@lesoram6236 with a Japanese Suzuki designed engine and suzuki parts
@@lesoram6236why are you telling people China and South Korea are different countries? Do you think everyone else is that dumb? Saying that makes you sound like a douche
It's korean.
Thanks for adding what you think these bikes are worth. I always wonder what they are worth after you fix them. Great job troubleshooting once again!!
Each cyl looks like a 250cc single. I looked at those when they were selling them here at a local shop. Seemed decently built.
Looks heavy as heck, gonna be a real turd of a performer I'd reckon. Hyosung is a HUGE company. There are plenty of parts.
They're DOHC four valve and the relatively high compression, I'm betting they have more performance per their 15 cu.in. than a 60 cu in Harley has.
I couldn't believe. Super clean bike and in excellent condition for just 150 bucks. You stole the show!
Joe, Do you know that Harbor Freight sells aluimium Welding rods that You use a LP torch to weld with. Ive seen them in use and they work great. God Bless
when you see a key like this before assembly it is good practice to put some lapping compound on the shaft and flywheel and lap it so the surfaces blend better. The key is there for alignment, friction and nut torque hold it in place.
Son of a diddly! I've been telling him for months to get a spark tester, and now that he got one for free and in place, he takes it out 😂
He has a 4 plug one that sits on a tabletop.
It's not the same thing. The "spark tester", not "spark-plug tester" is made to simply put inline so you can see if the bike has spark without pulling the spark-plugs out. It's a diagnostic tool to see if the motorcycle is producing spark, not the spark-plug. 👍🏼
@@ar2043 I see.
@@waynepantry7023it's called the first amendment..we in 🇺🇸 are allowed to say things that offend you.
Great job figuring this one out! I am always intrigued with your videos… I didn’t hear any music at the very end of the video this time
You are a frickin wizard dude . I think you're the very best mechanic on RUclips. There's not even a close second. Your camera work camera angle explanation it's all excellent there's nobody I enjoy watching more than you rip up any engine you're diagnostic is mind-blowing congratulations on a great show everyone knows you could be doing about a hundred different things in your life I'm glad I'm getting a chance to watch you work on every oddball and common piece that you find
Technically, Mustie1 is the "best." Darren is unreal what he can get running right quicd, he gets it to basics, gets it farting with a squirt of fuel, to prove spark and whatnot is ok before he worries about the carb, fuel pump and tank. That would tell him about the spark and the timing. He would have been at the timing well before he screws with the carb and whatnot. Usually the tank is the last thing he worries about.
@@zincfive ...sorry but the best of the best is over here in England...Allen Millyard from Berkshire (see RUclips channel)...he builds engines from multiple crank cases and welds them together...makes five cylinders and sixes out of threes and fours...world renowned engineer...but this guy is a great mechanic also...Hyosung south Korean flawed 2wheeler definitely came home to the right man...diagnosed every fault and repaired it or work around...i'll try to remember to follow this channel...there's so many repair channels you tend to forget quickly...we have a few over the water in Britain...some skills/talent in the world luckily...wish i had a bit more...and workspace
love your channel. I work mainly on 2 strokes but appreciate the education on 4 strokes. great work. thanks
What about the broken tooth off the gear ???
fuck it
I was wondering about that myself. Did he just put it back on like that?
@@stkyfngrszmooth I think he did , but the gear is just for the starter so a missing tooth wont be too much of a problem.
@@mark3863 It won't help. Why not just order the part and be done with it?
@@stkyfngrszmoothparts are unobtanium
Had one of these.. was a pretty good bike. Top speed a but limited.. But was a GREAT city bike, and for slower country roads. It was LIGHT, and had a low seat height which I needed at the time. Really a nice little machine. Parts are readily available.. and there is a decent online community to help you sort out little things.
For what it is…….i don’t hate it! I live a mile out of town in the country and i only have a 1.5 mile drive to work so I have been looking for a little virago 250 or something terribly small and fuel efficient to putz back and forth to work. I’d have given him $150 for it in a heartbeat 👍
Could you have fixed it? Joe is a very good teacher.😊😊
@@jayjudd6518 not to sound arrogant, but yes I’d have figured that out. I fix old stuff up like Joe, just not on the scale he does. It’s a side job/fun hobby for me I guess, I like haggling with people to get the best price and figuring out why they won’t run. I don’t drink or date anymore so a guys gotta do something with his time u know! 🤣
Joe, the spark plug tester is so you can just pull the plug wire off and insert that in line so you can test for Spark without pulling out the spark plug. Good tool to have for future use. I've been using them for years.
South Korea, not China. Different countries, different people.
later in the video I found out it was made in South Korea
I think it’s just a general term. When someone says something is made in china it might not actually be made in china, but it might as well be lol because it’s just as poorly made. Anything that comes out of South America is usually crap (besides Japan of course)
Well it def wouldn't been north Korea..lol
No they're not. Same thing.
watch the whole video
Love your videos! Very informative. Plus I like how you are family friendly and don’t have cursing. I like to watch with my boys! Keep up the great work!
Him and the guys from" Wheels through time ", fun to watch and very informative 👍
Is the broken gear not a problem for control?That piece of metal is not missing?
Ya I don't know why you wouldn't replace that gear. That's gonna be a problem
@@joemomma9177Nah, 2nd hand one easy external job.
No, it's a reluctant wheel. It's tells the coil when to fire.
It's the starter gear so it should be ok for a few
@@bbroken1 as the chain goes around that gear, it is actually using about 4 teeth...so 1 tooth missing should not be a problem
Wow another one in the bag great job Joe really enjoyed the show keep them coming.
Thanks for doing what you do.
Actually, Hyosung is a South Korean company, not Chinese. I have always removed and bypassed the kickstand and clutch "nanny" switches on every bike I've ever owned, including brand new ones. Completely unnecessary garbage that WILL leave you stranded, especially if you don't know it's there, or don't know how to bypass it. I wonder what else those Mikuni carbs were used on. I have never seen a Mikuni carb like those before. Could be a one off, like the super weird siamesed Keihin carbs on my Kawasaki Vulcan 750. It's obvious someone left ethanol in it. That's what caused all that corrosion. I use 20w50 oil in ALL motorcycles. Once I discovered the timing was off from removing the rear valve cover, I wouldn't have even bothered removing the front cover. Never saw a "wood rough" key break that cleanly before. You don't have an auxiliary fuel supply bottle to hang from the handlebars? Did you check the valve clearances while you had the covers off? Slightly tight valves can cause a low compression reading, and IMO there is too much difference between front and rear compression. Front rings could be stuck from sitting. But hey, it runs.
I love that I can fast forward through this videos and miss nothing important
Ouch!
It’s pronounced Ah Gee La. Eagle in Spanish. Pretty sweet bike. I’m actually jealous. Lol
I had a feeling that the timing was off by the way it sounded when you were trying to start it!!! Good job 👍
Looks like someone pryed on carb with screwdriver. Oops!!
I can’t believe you have all the specs for every make of motorcycle. Lots of fun watching
It's called the internet.
Good job Joe and south Korea
Well done. Your videos are so instructive. Your calm approach is exemplary. Cheers Peter.
I have a question maybe you can help me out I have a 2004 Yamaha v Star 1100 when I’m at quarter throttle it runs extremely well. But when I want to rev it from quarter throttle to a full throttle, the engine loses most of its power but revs up just fine. Then after a couple seconds it seems to gain power again and is fine. Under a quater throttle it runs perfectly but it almost seems like it’s loses power at full throttle for a bit.
Fuel problems
Alot don't start with stand down and hold clutch in
Do you need full throttle?
Clutch might be slipping/worn clutch discs..
If you haven't had any carb or fuel issues & it revs up just fine in Neutral without any sputtering. It might be the clutch.
Test: While going 25- 30mph in 2nd gear try shifting straight to 5th (or 6th) and give it gas. If the rpms go way up, without picking up any speed and the problem seems even worse. Than when normal shifting.
It's most likely a slipping clutch.
@@tracktorred7570 always
You did an amazing job, honestly. I rode a GV650 and anything sounded wrong, it was back to the shop. Hyosung still send me parts catalogues, here in Australia.
Send them an e-mail and they’ll gladly e-mail you a catalogue. Again great job!
Thats a steal
Love your videos Bud, one thing, if it says prime on the fuel petcock, then it's a gravity feed to the carbs. Just use it to fill the float bowls, and run the machine using either On, or Res. Don't be tempted to run on prime. Good buy tho, well cheap. 👍👍
Just got a 2007 Honda 450 but it has a bog any tips would be appreciated
Clean the carbs.
Fine vid. A blast to watch and I’m not even a rider. Thanks. Your knowledge earns every dollar of profit you make on these ‘bargain’ finds.
This is a quality bike compared to the chinese junk.
they are common here in Oz (Australia) the Hyosung. Real cheap, not bad bikes at all for the price. $150? Such a sweet deal Joe! Love your vids mate.. :)
Dang. 200 bucks and you still got him down 50 more lLOL
I have personally owned 5 of the GV250s.
There is a "unused" connector in your wiring near the fuel pump. This connector gets 12v constant when ever the key is on. The GV250 and GT250 used the same harness but the GT (and later year GV) has an electric fuel pump. I changed out all the vacuum fuel pumps for external electrics.
You got super lucky with the timing issue. I had a parts bike with a cracked piston from the spark triggering at the wrong time.
If you need to rebuild the carbs in the future, pay attention to the jet sizes, the front and rear are different and if you decide to delete the airbox and use pod filters you will need to step up a size on the jets.
For the love of bikes, do not drill out or straight pipe the exhaust. The engine NEEDS the back pressure and you will burn a valve on the rear and lean out the front to melt a piston. I had a brick of an engine come into my shop because of the owner cutting the exhaust.
Happy days joes posted 🎉😂
PS do you ever go on holiday
No time off
@@2vintage no rest for the wicked mate keep up the good work hard work pays off in the end your channel is top notch 👌🇬🇧
If you have good compression means the valve timing is good or close. That pushes it to the flywheel key. They mod these new carb jets, air filter pods and a change to the exhaust baffles. Try lowering the slide needle clips to lowest groove first.
Strip all that extra weight off and make it a bobber rat rod.
it's only 250cc, if there's a big bore kit for it? get that first
Joe you knowledge of small engines. Is insane. You are great at what you do. Well done 👍 😊
How in the hell did you get that for 150 bucks
Metric cruisers are very unpopular right now, plus that one is not even Japanese. Probably a fine machine, just very out of style right now.
@@jameshisself7375 I like that old school cruiser look, and 250cc is enough for a rider to enjoy for lite riding.
@@billycarpenter4740True. When I was a kid my brother's very first street bike was a Honda Rebel 250. It was totally gutless, but it provided a smooth beautiful ride until he hit a dog on it. 🤷🏻♂️
They are junk and you can't get parts for them that's why people get them gone cheap when they mess up.
@@stkyfngrszmooth As a kid back in the early 1970's I had both a Suzuki TS 100 and A Suzuki TS 250 . Both were good street/dirt bikes for getting around locally, the 250cc being enough to get up to highway speeds and driving out for hours. Maybe not 750cc bikes but enough to have fun with and ocassionally carrying a buddy along. With age now I'm alot more into the "slow and go" pace to see whats along the way as I travel here in central Florida.
Hiya bud, big fan of your show. I think the motor hydrolocked on you first start up after you serviced the motor, The fuel pump filled up a cylinder and when you cranked you could hear the starter stall. That was your fuel on the floor. It was clear on the video but bent over the bike would be a different matter. Its just my idea that's all mate. Keep on keeping on.
JOE - WEAR GLOVES MAN!!! Skin, prostate, liver, and stomach cancer can be prevented by just wearing gloves. Costco 100 gloves for $10.00.
😂
Not so much lucky as excellent knowledge and logical diagnoses. Always enjoy your videos. You are a nice humble guy.