This Is Why You DON'T Buy a KTM Dirt Bike ($1300 KTM 450 Find)

Поділитися
Вставка
  • Опубліковано 20 сер 2022
  • I take the KTM400exc for the first test drive since buying it. #KTM, #Horrible,
    ►SUBSCRIBE: / @2vintage
    ►MY SECOND CHANNEL: • New Polaris ATV Snow P...
    ► ADD ME ON ALL SOCIAL MEDIA ◄
    ► FACEBOOK: / 2vintageyoutube
    ► INSTAGRAM: 2_vintage_ / 2_vintage_
    ► SNAPCHAT the2vintage
    ► EMAIL FOR BUSINESS INQUIRIES ONLY: 2vintagetooo@gmail.com
    Thanks for watching and subscribing!
    New videos every week!
    The following video features activities performed in controlled environments by knowledgeable persons. DO NOT attempt to duplicate, re-create, or perform the same or similar activities at home, as personal injury or property damage may result. 2vintage( Joe Weber, the persons shown in this video and ANY CONTRIBUTOR, ARE NOT LIABLE FOR ANY such injury or damage. ALL 2vintage( Joe Weber) CONTENT IS FOR ENTERTAINMENT PURPOSES ONLY.
    2vintage (Joe Weber) makes no representation about the sufficiency of any safety precautions and equipment used in this video.

КОМЕНТАРІ • 896

  • @jozsef6453
    @jozsef6453 Рік тому +106

    Dont be affraid of rejetting a carb! The stock jetting isnt always the answer. Even a couple degree change in the temperature can make it bog. If you feel like it needs a smaller one put one in it.

    • @ivanpomy
      @ivanpomy Рік тому +14

      JD jetting makes a great jet kit

    • @Mr.M1STER
      @Mr.M1STER Рік тому +2

      I agree. Definitely worth a shot. Worst that can happen is that it doesn't ride any better but hey it's already running pretty bad as is.

    • @corporalclegg914
      @corporalclegg914 Рік тому +1

      I agree. the issue that I have is that you shouldn’t have to, unless you plan to operate at extreme altitude(s). I believe many OEM suppliers & aftermarket producers could do a much better job at machining & assembling parts with tighter tolerances. I’ve seen big-name Japanese automotive part suppliers’ quality decline in Honda/Acura and Nissan engine & transmission manufacturing over recent years, so I imagine that their power sports parts/component manufacturing has followed suit. I was in the mass pro auto industry during & years after the tsunami, but the out-of-spec-parts increase began well after their infrastructures were restored. I fear the worst is just beginning.

    • @lifewithabe312
      @lifewithabe312 Рік тому

      Agree with this

    • @dosstheboss100
      @dosstheboss100 Рік тому +2

      They are little lean on factory jets because lot of these was street legal and had to pass emissions

  • @artiexr222
    @artiexr222 Рік тому +25

    Another vote for stator electrical issues especially with it not registering above 14v charging.

  • @dariusfitch968
    @dariusfitch968 Рік тому +42

    Had a very similar issue with my bike , turns out it was bad wire in the coil and a few other wires on the bike that had corroded over . Fixed all the wiring issues and it ran perfect

  • @betarider9392
    @betarider9392 Рік тому +8

    Definitely sounds like an ignition issue. Fuel delivery problems are seldom intermittent. Start with the simple stuff. Disconnect the stop/kill switch from the primary lead of the ignition coil and test ride the bike . If problem persists, unscrew the spark plug boot from the secondary ignition coil lead and check the resistance of the boot. It should be close to 5k ohms. 4.5 - 5.5k is fine. Then before re-installing the boot, trim the secondary coil lead back 1/2". Make sure the lead is long enough to do this. There have been thousands of perfectly good ignition coils replaced when the only problem was the spark plug boot or the connection between the boot and the secondary coil wire. Other than these checks, it's on to the stator, pick up coil and CDI unit.
    Good luck!

  • @madisimo2965
    @madisimo2965 Рік тому +8

    Sounds exactly like what my bike was doing. And all I had to do was reset the ap timing and go down a size on my main jet, now she runs like a dream.

  • @Coastlylocal
    @Coastlylocal Рік тому +8

    I have an 08 sxf and the jetting of the flat cr carb always gave me issues. Either around camp or at the top of the mountain. I’d always be swapping jets .
    Once I switched to a lectron, “kinda felt like cheating “ I had instant power everywhere.
    Lots of love bro , love the vids

  • @staceysmith6518
    @staceysmith6518 Рік тому +4

    Don’t blame it on being a KTM because you can’t fix it lol it sounds like there’s a problem with the stater or possibly some loose wires in the mission system that will make it appear to be running rich because you’re not getting proper fire under load.

  • @nickbartolomeo8318
    @nickbartolomeo8318 Рік тому +31

    I can’t justify saying that the stator isn’t an issue, but I had issues with my 2002 520 falling on its face like that. Checking that the throttle position sensor is rotated to the optimum position helped, because that adjust the spark timing as the throttle turns. The thing that seemed to help the most was dropping the needle in the throttle by raising the clip position two spots, reducing the flow of fuel as you open the throttle further. Really hope you figure it out, love the work you do, keep it up!

    • @mikenike776
      @mikenike776 Рік тому +1

      throttle position sensor on a carb?

    • @nickbartolomeo8318
      @nickbartolomeo8318 Рік тому

      @@mikenike776 ua-cam.com/video/0lBPDrjAwqA/v-deo.html

    • @schwartzenheimer1
      @schwartzenheimer1 Рік тому +10

      This is why you don't buy a KTM dirt bike: you don't know the difference between a high/mid-speed miss and a 'rev limiter'...take the advice given, check the TPS,, but since the plug (wrong AutoZone special) is black and sooty, maybe check the needle position and/or the main jet size. Just because 172 is 'stock' doesn't mean it's right for your setup. It's just a starting point....
      My approach would be to start by leaning out the main, so it pulls hard at wide open throttle (WOT), and then adjusting the needle to smooth out the transition between part-throttle and WOT. The pilot already seems fine...
      Just a thought.

    • @johnmarshall8095
      @johnmarshall8095 11 місяців тому

      Bury it next to the Yamaha!

  • @philred7139
    @philred7139 Рік тому +87

    So the moral of the story is if you have a KTM, take it to someone who knows what they’re doing

    • @robspear03
      @robspear03 Рік тому +25

      Or...buy Honda.

    • @scottnathanphoto
      @scottnathanphoto Рік тому +1

      Never own one. Austria is not Germany.

    • @EarthSurferUSA
      @EarthSurferUSA Рік тому +3

      @@scottnathanphoto Germany makes a competitive dirt bike? Figure out why not.

    • @scottnathanphoto
      @scottnathanphoto Рік тому +8

      @@EarthSurferUSA I had a 990 Adventure. It was trash and always broken from new. Same goes for every KTM owner I've ever known, (dozens.) I had several BMW's including a GS Adventure. Never a single issue. Clear?

    • @codskilclanchannel6420
      @codskilclanchannel6420 Рік тому +16

      @@scottnathanphoto own 3 ktms best bikes ever

  • @tylerklapchar9967
    @tylerklapchar9967 Рік тому +36

    This era ktm was known for issues… all sorts of issues…. The new models are superior machines

    • @PearlyS10
      @PearlyS10 Рік тому +2

      Amen that

    • @craigmorgan4676
      @craigmorgan4676 Рік тому

      @@PearlyS10 pos this thing is god dammit!😮😱👁👀👁🤯🤪😮🤔🤔🤔

    • @urbanitesgarage3299
      @urbanitesgarage3299 Рік тому +8

      Lol last vid everyone was saying that era of ktm was “highly sought after” what is it with KTM riders lol

    • @mw4518
      @mw4518 Рік тому +3

      @@urbanitesgarage3299 they were saying the 2003-2007 generation were very sought after, because they are. I’ve seen several of those motors with thousands upon thousands of miles on completely stock intervals, only oil changes.

    • @catow465
      @catow465 Рік тому

      @@mw4518 im cutting it close with a 2008 lol

  • @mikestowe6136
    @mikestowe6136 Рік тому +3

    number 1 ya shouldnt leave your dog out in the rain in the kennel better invest in a invisable fence or take him inside to me if plug is good its stator or coil / ignition

  • @cleighton1605
    @cleighton1605 Рік тому +47

    Check valve clearances, and I would also pull the stator cover again and check the stator voltage output at the connector itself where it connects to the main harness. That bottom coil @ 17:00 mark in your last video looks very dark to me. It could be something simple as a bad electrical connection, someone was obviously messing with the electrical at one point based on the headlight wiring. Yes it does appear to slowly build up a charge, but that doesn't seem right. As soon as it starts up, if its charging properly, it should be reading high 13s - low 14s steadily, it shouldn't take a min or two to climb to 14. It should just read and maintain whatever it is outputting for voltage. From a quick google search, yours has symptoms of a dying stator, which can also cause engine running issues like yours is having. So I would find the stator resistance/output specs and start troubleshooting there. If none of that helps, then I would start looking at re-jetting the carburetor.

    • @stephenblackstock1923
      @stephenblackstock1923 Рік тому

      @martin barr's CRF450 not necessarily. The ktms didn't really get hard to start if the valve lash was too large unless it got to the point that the valve wasn't opening. And it seems like its getting a little warmer than joe wants it to considering he was complaining about boiling coolant when he rode it.

    • @dr.m6098
      @dr.m6098 Рік тому

      See my comment, I had the same problem because my bike was running too lean. All the time I tought was rich condition because of the black smoked spark plug. The black smoked spark plug can be confusing.

    • @Mr.M1STER
      @Mr.M1STER Рік тому +5

      I agree. Battery should be charging at well over 13 volts the instant the bike is started.

    • @warrengarfield309
      @warrengarfield309 Рік тому

      @@Mr.M1STER True, whatever else is wrong with it that is not right for a start.

    • @skullman9113
      @skullman9113 Рік тому

      Valves

  • @johnhicks735
    @johnhicks735 Рік тому +3

    I've never owned A dirt bike that ran in my life. I always fixed.& Repaired.& Worked on them for other people instead to enjoy instead of myself on that part of it all tom.

  • @beaublackford3697
    @beaublackford3697 Рік тому +6

    I had a 2002 EXC 300 2 stroke when I was a kid, I loved it! I was so comfortable riding it. I was racing my CR 85 before, when I switched to the KTM I noticed and felt a major improvement in my riding. I miss it, it looked exactly like yours.

    • @jakobsmith3772
      @jakobsmith3772 Рік тому

      I have a 99 380 and it’s amazing. So much power, it keeps up with the newer 250’s and 300’s. It Doesn’t give me much trouble it’s pretty reliable. I hate how he said “this is why you don’t buy a ktm” he bought a cheap bike that obviously hasn’t been taken care of, of course it’s gonna be a basket case. If you take care of them they’re great. If you buy a cheap one that’s been abused obviously your not gonna have a good time.

    • @maxwelledison03
      @maxwelledison03 10 місяців тому

      ​@@jakobsmith3772KTM is trash

  • @stetsondenning2703
    @stetsondenning2703 Рік тому +3

    Correction, don’t buy ktm FOUR STROKES! The TWO STROKES are amazing!

  • @MMKnight_1
    @MMKnight_1 Рік тому +25

    The hole in the fuel tank on KTM bikes for the choke is just for the extra fuel capacity of the tank, not "over-engineering" in my opinion.

    • @1965l88
      @1965l88 5 місяців тому +1

      Exactly correct. When you only have a 2-ish gallon capacity in the first place, that extra capacity could be the difference between riding home, or pushing the bike home.

  • @peteraitken6494
    @peteraitken6494 Рік тому +4

    Great video joe you will get to the bottom of it I'm sure could be the jetting though my friend ha s 2 ktms and they are flying machines a bit newer right enough but I think once you iron this problem out it will fly good luck with it and hope you find the answer take care and your dog is a beuty mate 🔧🔧👍👌🔧

  • @timothydeshotel301
    @timothydeshotel301 Рік тому +3

    I've had something similar happen before. Turns out when I replaced the diaphragm on the carb, i put the fuel needle through the retaining clip instead of under it. It caused the bike to bog under load. You can also see if you can adjust where the fuel needle sits on the clip and check for tears in the diaphragm.

  • @gusgiesel
    @gusgiesel Рік тому +5

    I think the click after shutoff is part of the electric starter mechanism. Also the 18 inch rear wheel may help you determine 400 or 450.

  • @tjanusz3
    @tjanusz3 Рік тому +9

    KTMs are awesome bikes and require experience to keep them maintained. You cant slop shit around on these.

    • @patrickmorey2441
      @patrickmorey2441 Рік тому +1

      aka they break very often and have reliability problems

  • @mikekubani
    @mikekubani Рік тому +16

    If it truly is a 2002 400EXC then the exhaust is wrong. The 2002 400 had two pipes out of the cylinder all the way to mid pipe before it went to one and into the silencer. Also, the muffler does have a spark arrestor in it. I owned one since new and just recently sold it for a newer model.
    A JD Jetting kit would wake that bike up, but I agree with others that the bogging issue is electrical.
    That year carb was difficult to get the pump set correctly as you have to bend a tab. Took me many tries to get it right.
    Good luck!

    • @rposton919
      @rposton919 Рік тому +1

      Ever heard of aftermarket exhaust?

    • @dannywade1783
      @dannywade1783 Рік тому +1

      @@rposton919 aftermarket pipe doesn't change the head mate😂😂😂

    • @tomz2344
      @tomz2344 Рік тому +1

      Two pipes come straight out of the head on 400 exc so perhaps that's 450?

  • @keithcrampton1438
    @keithcrampton1438 3 місяці тому +1

    a lot of times I go too far vintage guy and I forget to think about you because you are the main attraction here this is your channel you are the SUPERSTAR!

  • @sulliandtylergarage1745
    @sulliandtylergarage1745 Рік тому +1

    Close to first, love the videos and i almost bought a project ktm to restore and sell but now , im gonna keep looking

  • @kylelangdown3322
    @kylelangdown3322 Рік тому +62

    Recheck your valve clearance. Could be as simple as your intake is too tight and not clearing all the fuel into the cylinder when it opens causing it to pile up and get more and more rich as it runs. Other than that the timing could be slightly off, maybe the woodruff key bent slightly when you were having those one way bearing issues.

    • @johnbest4320
      @johnbest4320 Рік тому +3

      I'd check you're intake valves miby something is slightly off as there normally decent running bikes over engineering definitely with ktm but it seems like it will definitely be a small problem

    • @derekwaycott3785
      @derekwaycott3785 Рік тому +1

      Leak down test

  • @bwholz
    @bwholz Рік тому +2

    Sounds like both the needle on the slide and the accelerator pump need adjusting. Awesome video though keep up the great work.

  • @modelrc9500
    @modelrc9500 Рік тому +44

    I had a failing stator and it produced the exact symptoms your dealing with. It would start up and run good in the low rpm’s but would break up at high rpm’s like seen in the video. The stator does seem to have an issue with it based off those charging voltages. Should immediately jump up in voltage, not a slow climb as seen on your bike

    • @cvseniorful
      @cvseniorful Рік тому +4

      I agree with Model RC. 13.0 volts is not enough. That would cause your rich condition also. Not a KTM guy, but I would think the voltage should be 14.0 to 14.5 with it running.

    • @danielspataru6372
      @danielspataru6372 Рік тому

      I had a sx-f 450 and the voltage was 13.5 - 13.8

    • @cvseniorful
      @cvseniorful Рік тому +1

      @@danielspataru6372 That voltage makes sense IMOP.

    • @reggiexp69
      @reggiexp69 Рік тому

      same, my honda trx300ex had that problem ran fine but then sometimes it would limit at 80kmh 2min later 92kmh then 70 felt like it had a rev limiter, then drive fine, stator was all dirty and i just changed and never had that problem again (i did but the spark plug booth moved and didnt make connection but that was a easy fix)

  • @johnhicks735
    @johnhicks735 Рік тому +8

    Checkout the vented fuel tank gas cap to it maybe plugged in the tip nipple to by chance from dirt.,or dust.packed inside of it to tom.

  • @johnhicks735
    @johnhicks735 Рік тому +2

    Also checkout the inline fuel filter for being plugged up with debris.&sludge build up. One more thing to checkout is the fuel tank line inlet port for fuel flow blockage to like from rust.& Etc.

  • @benradcliffe2717
    @benradcliffe2717 Рік тому +1

    Hey bro, I love the videos, iv been binge watching for weeks😂, mad love from New Zealand, I was wondering if you have ever brought or worked on a WR250F, I recently brought one, and iv taken it to the shop to get the forks sealed and a whole $700 service, I just wana watch you work on a wr250f so I can take it all in and do my own repairs 😂, cause DAYMMMM workshops are expensive 😭😂, brought the bike for 1300 and iv spent 2k in the shop + including a helmet and goggles 😇

  • @rick262
    @rick262 Рік тому +3

    20-year old bike. For a sanity check, try a quick leak down test just to verify there's no issue with valves or rings before getting too involved with carb adjustments or electrical system.

  • @jacobd4793
    @jacobd4793 Рік тому +1

    Have a good one man, keep it up!

  • @robprice6573
    @robprice6573 Рік тому +1

    I think it could be weak spark
    Maybe coil or spark plug wire. Good luck Joe. I really like your videos.

  • @danpariseau4141
    @danpariseau4141 Рік тому +1

    Take off air box cover. I put an exhaust and valves in my 450 and couldn’t figure out why it was doing exactly what your bikes doing. I took off the air box lid and it became an animal. It was restricted and wouldn’t rev out.

  • @kawicepticon8866
    @kawicepticon8866 Рік тому +2

    Check the airfilter and intake track , if the carb is functioning as it’s suppose w stock jets and it’s pig rich then check the filter and intake track to make sure nothing made a nest or has it obstructed , if that’s Gucci time to check the valves and do a leak down test . I’ve seen cam lobes wear off which caused a similar issue .

  • @billyjames9861
    @billyjames9861 Рік тому +2

    New Regular rectifier - Cheap as chips - (Voltage should higher than that), also voltage drops slightly if anything when you rev it up - Also compression doesn’t last very long on the EXC’s - New rings and yer good - Get yer money back on that sprag clutch bearing - Still a good buy though.

  • @highracooon
    @highracooon Рік тому +2

    Ktms aren’t bad. And if I’m not wrong that’s a older one and the older ktms weren’t good… Never had a problem with mine and it’s a 2 stroke with 200 hours on stock piston

    • @clintonlied
      @clintonlied Рік тому

      Not true. The early KTMs were boutique bikes. And at that time, dealers were few and far between. This also caused people to have to order parts online. The older bikes are fine.

    • @highracooon
      @highracooon Рік тому +1

      @@clintonlied with my experience the 2010 I have has given us more problems then the 2020 I have. Imo I think 2017+ ktms were better then the older ones. Never had a problem with my 2020 but have had a few with my 2010

  • @trashcan4698
    @trashcan4698 Рік тому +8

    18:39 why does he just have a puppy siting in a cage outside in the rain listening to a loud bike?

  • @dennisbagatin4480
    @dennisbagatin4480 Рік тому +1

    Try messing around with the jets in the carb you never know love the content 👌 ✌️

  • @tylerklapchar9967
    @tylerklapchar9967 Рік тому +8

    According to plug definitely running rich but I’d almost be willing to bet it’s maybe an intermittent spark issue on acceleration. My rmz kinda did something similar to this and it was in fact electrical

    • @dr.m6098
      @dr.m6098 Рік тому

      Black smoked spark plug not always is because running rich, I can be because is running too lean. It can be confusing, but I had the same problem, the plug was black and smoked. It took me 2-3 weeks to figure it out, always I was thinking is running too rich because plug, but NO was lean condition. After trying big jets I coudn't belive is running too good, starts with no choke and rev it out completly.

  • @jonnyonwheels
    @jonnyonwheels Рік тому +16

    Personally I would check to make sure it has a stock cdi on it and check the stator output as others have already said.

  • @bigdadgigachad3042
    @bigdadgigachad3042 Рік тому +2

    You're really smart, it's a really nice bike, once sorted it'll be sick AF. I'm sure you'll get it.

  • @roryk.3568
    @roryk.3568 Рік тому +1

    Did you try running it without the filter? If it's rich you should notice a difference. It is weird though. Keep up the great work and keep those fires under control.

  • @MotoChurro
    @MotoChurro Рік тому +1

    Always check valve clearance when you buy a used bike. Most people have no clue about how often they need to be checked or even check them at all.

  • @cameronbergman1321
    @cameronbergman1321 Рік тому +3

    My banshee used to do this same thing it was from a stator wire running along next to the exhaust and it would start up and run great until it warmed up then sputtered only on acceleration the wire would heat up and loose continuity and make it run poor

  • @darrelphillips5145
    @darrelphillips5145 Рік тому

    Had same problem on a yz450f. It had a 30 leak jet allowing accelerator pump to have to much pressure/fuel. Went to a 50 then raised needle. Ran like a champ after that.

  • @stringtwister7654
    @stringtwister7654 Рік тому +2

    I have A 2000 400exc it's the carb, I never could get it to run right I bought a rebuilt carb for 300 and sold mine for 200. Best 100 bucks I ever spent. My original carb someone had added a long fuel screw and that model carb wasn't even designed for it. Made bike run super rich.

  • @bighomieJ5X
    @bighomieJ5X Рік тому

    Love all the great content, would love to see you ride an old cr500 💯👏🏾👏🏾

    • @bighomieJ5X
      @bighomieJ5X Рік тому

      @Art of War ok thanks,

    • @dannyipwn1203
      @dannyipwn1203 Рік тому +2

      Ive had a couple CR500's now.
      I don't understand all of the hype.
      As a 450 rider currently they don't stand a chance anywhere at all.
      My YZ450 and CRF450R both leave the fully rebuilt CR500 in the dust.
      the CR500 steel frame is junk. the suspension geometry is weird.
      its heavy and encumbered so you cant really turn it.
      All in all. CR500 was cool back in the day because it was the "biggest fastest" bike.
      However, once we got into the age of the 450's with aluminum frames. CR500's just suck.
      they are conversation pieces at best. but they are tank to ride.

  • @j33pfyn4tik6
    @j33pfyn4tik6 Рік тому +2

    Sounds like a leak around the sneezer pin. The penal anacular spring should be at least 3 cat turds out and torque setting should be at minimum 30 uga dugaz!

    • @jameskrause8902
      @jameskrause8902 Рік тому +1

      Dude??? I agree with your penal anacular spring settings, but 30 uga dugaz? That's way too many.

  • @thereelfeal
    @thereelfeal Рік тому +3

    I think it runs like shit because you have that poor puppy locked in a cage in the rain.

  • @jamiebouchard9862
    @jamiebouchard9862 Рік тому

    If it’s rich turn ur a/f screw a bump out. Or adjust the clip on the needle down a notch. Regardless of accelerator pump, you can meter the fuel intake. If it’s got a reed cage check reeds as well

  • @mikehudg2209
    @mikehudg2209 Рік тому

    I have same volt meter , you have aftermarket headlight looks like a ufo product, great video , I was thinking of starting my on channel 😀

  • @keithcrampton1438
    @keithcrampton1438 3 місяці тому +1

    The world needs leadership vintage guy and you are a perfect example of high-performance!

  • @chadbontekoe3122
    @chadbontekoe3122 Рік тому +2

    My 2010 400xcw sounded like that right B4 it dropped a valve locking up bike.
    Head alone 800$. Oil was clean but there was shards in my airbox

  • @samdouglas1842
    @samdouglas1842 Рік тому +6

    Had an 04' 450 EXC that did much better after replacing the mid-body gasket. Just a thought.

    • @sspmoto
      @sspmoto Рік тому

      Same. ‘05 525 mid body gasket

  • @johnhicks735
    @johnhicks735 Рік тому +3

    Check the pick up coil.,or the points to if that we engine has them on it to. They set between 0.15 to 0.20 thousands of A inch on top dead center to just about to open up. Accept still closed off until the crankshaft is rolled over again to fire under pressure.

  • @anthonyw0697
    @anthonyw0697 Рік тому +3

    Typically manufactures give rich jetting. So the average Joe don't blow them up. Maybe this machine just runs rich. Id try dropping the jetting. The accelerater pump you usually don't get enough squirt. When they fail they are not squirting enough. Today's ktm are top notch. All the early (02-04)4 strokes the manufacturers were trying to work out the bugs of competitive 4 strokes. Not just ktm the big 4 Japanese too

  • @kyleb6325
    @kyleb6325 Рік тому +1

    That click is the starter gear. Sometimes the motor spins backwards a little bit when it’s shut off. It’s completely normal my 2021 Crf250r does that and so does all of my other buddies bikes

  • @njmxjunkie3128
    @njmxjunkie3128 Рік тому +2

    If your coolants bubbling that’s leaning towards a lean condition

  • @scottyd2262
    @scottyd2262 Рік тому +2

    That's not a rev limiter, that's for sure

  • @Dono743670777
    @Dono743670777 5 місяців тому

    The sound you hear when it shuts off is very common in modern 4 strokes. It's the decompression snapping back.

  • @tatewilliamson7931
    @tatewilliamson7931 Рік тому +1

    Check valve clearance. I have a 150r that’s having the same bogging/cutting out issue. The valves are off. I dropped the needle all the way and it quit for about 10 hours of riding and it just came back as the valves got worse. Valves are definitely out of spec on that bike though.

  • @johncoleman2495
    @johncoleman2495 Рік тому +1

    Bike/engine diagnostics can be pretty simple if you just follow the basic steps and eliminate all the variables! ALWAYS drain and change the fluids (especially the fuel! It's an unknown quantity) draining the oil can give you a clue to overall engine condition. Inspect/Clean/Replace air filter. Do a proper compression test. Start with the cylinder dry! No oil, if it's low put a small amount of oil in the cylinder and retest. If compression comes up considerably your issue is "probably"rings and not valve related (4-stroke). Clean and inspect carb, if you're sure it's functioning properly, pull the ignition cover and check timing. In this case you have a charging system and it's not charging properly (low voltage) find out why! Inspect wiring harness and all connections. Buy a manual or research online and find the correct test procedure for the stator and coil. In this case I believe it's one of those 2 things but hard to say and only guessing without testing. The vibrations and conditions that bike components are subjected to can wreak havoc on wiring and electrical connections.ive also seen 4 stroke engines run erratically from improper cam timing ( excessively worn chain (although I doubt that's the case here)

  • @keithcrampton1438
    @keithcrampton1438 3 місяці тому +1

    You must be a crazy hard worker because it is so hard to focus on your job well you are doing all the camera work!

  • @sandmanbub
    @sandmanbub Рік тому +7

    Could the previous owner have changed the float hight , attempting to stop the fuel from leaking? What notch was the clip for the main jet needle in?

    • @rigguyjt
      @rigguyjt Рік тому

      I agree. It points to a possible float height problem but maybe set too low.

  • @dakarpsi
    @dakarpsi Рік тому

    Sounds like you need to adjust the preload on the suspension. Was it bouncy in the rear end or too stiff?

  • @gregdyer1380
    @gregdyer1380 3 місяці тому

    Hi had an EXC 520 - I converted it to a Supermoto with stiffer suspension, upgraded brakes, 17 inch wheels front an drear, road tyres and different sprocket ratios and it was AWSOME!!!!

  • @rotax636nut5
    @rotax636nut5 Рік тому +1

    Try raising the needle in the carb slide 2 notches, if that improves things check the float height and set to factory settings then go back to the needle and set the best position by testing. Your problem is lean mixture not rich I think

  • @Deathlobster137
    @Deathlobster137 5 місяців тому

    Did not expect the turkey to make a cameo lol

  • @thomasdausch8557
    @thomasdausch8557 Рік тому

    After reading all the comments, it could be just about anything,,tough problem to solve,,, i so love the size of your tract of land , enjoy going for a ride with you on your land,,ride safe

  • @keithcrampton1438
    @keithcrampton1438 3 місяці тому +1

    Most of my friends take their bikes to the mechanic because they cannot figure the s*** out but you are a superstar God!

  • @joemusicman64
    @joemusicman64 Рік тому +2

    Sounds electrical. Like the stator. Not giving constant spark.

  • @psychotrucker9880
    @psychotrucker9880 Рік тому +1

    My ktm 360 with a gnarly pipe had a bad bog. I ended up after many tries going with a 178 jet instead of the 172 and second notch on the needle. Try going way rich first with 4 sizes bigger.

  • @mark_Hershey
    @mark_Hershey Рік тому +2

    One thing you probably dont like about the ktm is the fork rake, they had a weird “euro” angle on the forks. Really weird issue you got there. I’m leaning towards ignition. But no telling how many hours are on it….sounds really bad. Curious what you find.

  • @keithcrampton1438
    @keithcrampton1438 3 місяці тому +1

    I wish I had a family like you vintage guy and the only reason I am so fantastic is because I never listen to my mother!

  • @joemusicman64
    @joemusicman64 Рік тому +1

    I had an ATC 90 I bought as a box of parts. Got it all together and it never ran right, like your KTM. Turns out the box of parts came with two ignition coils. I picked the wrong one. Put the other one in and it ran perfectly. .

  • @holisticaustralia
    @holisticaustralia Рік тому

    Maybe Vinny can find some matches somewhere! Your a legend Brother, keep up the good work, I'm looking forward to a road test on your Gandhi's Goldwing.
    (;{~

  • @ironlungs1626
    @ironlungs1626 Рік тому

    If it is anything like the old Yz/Wr426's that yamaha brought out in the late 90's early 2000's. The carburetors on those were renowned for having a similar issue. There is a mod you can try for the fuel pump called the BK mod. It can be done several ways but essentially it just stops the arm from pushing the pump all the way so it doesn't squirt as much fuel through during acceleration. If you have exhausted all other basic options. Try the BK mod. I have several 400's and 426's and i have had to do it to every one in order to get it not to bog.

  • @kenjohnson5498
    @kenjohnson5498 Рік тому +2

    Everyone i knew that has had a KTM worked on them as much as they rode them. Every now and then you get a good one that performs well but very rare.

  • @phatsmitty
    @phatsmitty Рік тому

    I believe that your KTM 400 has excellent potential. Sure is frustrating with all of the blood sweat and tears you have invested. Wonder if there is something off with the carb, they are complicated. Choke piston position, Idle circuit, pilot jet, jet needle, jet needle height position, needle jet, main jet... see if you can find factory spec for all the above. Re: suspension... same. Find factory spec for compression, rebound, preload for front and rear. I wish you luck and thanks for the video...

  • @michaelmays9292
    @michaelmays9292 Рік тому

    Love to see you figure it out i believe in you brother Joe

  • @5gadget5
    @5gadget5 Рік тому +2

    Some of the KTM EXC's (Enduro Bikes) here in the UK had an option of a "long range tank" which yours look's to be one.

  • @johncoleman2495
    @johncoleman2495 Рік тому +1

    Always go back to what an engine needs to run. But it needs more than that to run properly! Air/fuel/spark. Air needs to be adequate, fuel needs to be fresh and metered correctly. And spark needs to be adequate as well. And timed correctly. Just because you get spark cranking an engine does not mean it's enough spark or at the right time for complete combustion. And it also needs enough compression for proper combustion. When you're dealing with a 4-stroke more variables come into the equation. Valve seal, valve timing and adjustment. And then there's always the possibility of air/vacuum leaks.

  • @craigsnook3605
    @craigsnook3605 Рік тому +2

    Hiya. My untrained but been mucking around with motors my whole life gut instinct says ignition issues. Also in my old shop we used to say KTM stood for Keep Throwing Money lol. Dont know what KTM parts are like in the US. But here in NZ they are stupidly expensive. A set of genuine valves and springs for ya 450EXC would be over $1500!!!! So yeah, hardly ever used genuine parts in the things.

  • @billdeck9766
    @billdeck9766 Рік тому

    Get a R&D flex fuel screw adjuster. Rocky Mountain has them. This will allow the fuel screw to be adjusted from the side. The starter is in the way to adjust fuel screw. When the fuel screw is adjusted correctly, throttle response will be better.

  • @garymallard4699
    @garymallard4699 Рік тому +2

    that's an oversized fuel tank...why they made a hole for choke access...it isn't weird... or stupid...a simple solution to make working choke easier while allowing more fuel capacity....

  • @uriahpolite1594
    @uriahpolite1594 Рік тому +2

    Bro comes in clutch all hours of the day

  • @vettepicking
    @vettepicking Рік тому +1

    I had a kdx that was old and the slide needle and brass part in the carb that meters it was worn out, no amount of jetting would fix the rich problem. Figured it out years later....

  • @samueljoseph9540
    @samueljoseph9540 Рік тому +3

    I had that problem on my 110cc pit bike and it was too much gas coming into the cab try closing on the carburator flotor .

  • @keithcrampton1438
    @keithcrampton1438 3 місяці тому +1

    I love the job you did on the 350 Honda twin because that was a very sweet bike!

  • @michaelevans9568
    @michaelevans9568 Рік тому

    A couple of things check the aluminum nut on the crank on the clutch side it comes loose and the carburetor needs the mid base gasket changed and make shure the accelerator pump is working.
    I accidentally posted the other one to early

  • @robertburn8705
    @robertburn8705 Рік тому +2

    Gotta be electrical. The plug could be black because it's still putting the same amount of fuel in but it's not firing so it's not burning off

  • @micflynn1
    @micflynn1 Рік тому +2

    Discount the accelerator pump, see how that does. You should be able to unhook the pump lever.

  • @dannylisle3637
    @dannylisle3637 Рік тому +9

    Could be a coil problem sounds like spark is cutting off

  • @Jrod_FPV
    @Jrod_FPV Рік тому

    Lookup the 1/6 turn method for valve clearance. Do not use feeler gauges as they can mislead you if valve train is worn.

  • @luketait64
    @luketait64 Рік тому +1

    My drz 400 did this plus cutting out , turned out to be the needle seat in the carb slide. Barb had snapped leaving the needle loose and bouncing around

  • @bradpearson740
    @bradpearson740 Рік тому +3

    I had a four stroke that ran just like that once. Tried everything. Turned out it just needed a new spark plug, the one that was in it was causing bad misfires.

    • @jakobsmith3772
      @jakobsmith3772 Рік тому

      Not trying to be rude I’m Just curious, what all did you change?😂 normally the spark plug is the first thing to change when your having issues

  • @jeffkenyon7084
    @jeffkenyon7084 Рік тому +3

    I think it's breaking up because of a spark issue that's what it sounds like to me

    • @stunna7807
      @stunna7807 Рік тому

      Yes. Did you notice he pulled that thingy off the top of the plug? Previous owner probably did that. Removing that is for old school engines with that exposed wire connection to the plug. It could be causing big misfires and the rev limiter is just tracking firings which it’s doing but it’s arcing in the boot. Kicking it over it will spark. Under load and it can’t fire the plug every revolution making it black. I’ve NEVER removed that from a plug on anything but a lawnmower

  • @francis69861
    @francis69861 Рік тому

    Did you get it running?, I had the exact same issue on a Honda xr75 , the sound and boggs were identical, I rebuilt the carb and blaster the jets clean with compressed air and added a new air filter , and the issue was fixed

  • @gameboysen684
    @gameboysen684 Рік тому +5

    love your videos

  • @sandmanbub
    @sandmanbub Рік тому +4

    I'm a bit surprised that the oil hadn't been diluted with fuel. When fuel remains in the cylinder, it seeps down past the rings and into the crankcase. The guy must have changed the oil shortly before selling it to you.

    • @2vintage
      @2vintage  Рік тому

      Yes he did change the oil right before selling it to me.

    • @shawncordeiro5078
      @shawncordeiro5078 Рік тому

      @@2vintage you no why they do that rite ? to hide sh*t