FYI, STARING FLUID IS FLAMMABLE! ... I should not have to tell anyone this, but yeah, keep a water hose nearby...

It is my opinion, if you are using the reed valve kit, Your crank pressure rises. The seals will be the first item tested to the max. Good video.

You have the most informative videos on KZfaq. Thank you so much for helping us all out from the motorized bike community. ☺️

Thanks Mr. Hover, that informative seal leak vid. really drove home the importance of all 2-strokes need for a leak-free crankcase. I've seen several YT small engine repair gurus using a vacuum gauge & hand pump to verify leak free status before reassembling the chainsaw, weed whacker, etc.. Now, I see the symptoms while you describe them in real time, & your leak check spray diagnostic tool! Auto mechanics "spray" 4 stroke manifolds, carb flanges, vacuum lines, etc. to find vacuum leaks wherever intake vacuum might be, listening for that rpm change. Great teaching!👍

Man thanks Hover. I tried everything except new seals and of course that's where the leaks were. It idles now. Much appreciated, my dude.

Ive always been afraid tho change my own seal, ive bought new bottom ends because of this. But tonight i changed the seals on my yd100 after watching this video

Got myself a crank seal air leak straight from factory. Thank you for the video. Really helps. Just ordered some crank seals and will be doing this job myself. Wish me luck!

thank you for golden information , love you , people will be able to fix their motorized bikes because of your hard work and generosity

Sweet! Glad ya got it fixed! Congrats! And ride on bro!

Dude u finally solved my problem... That's why my bike won't idle

My bike has been running lean for a while now like where it shuts off at idol and it runs away, rode it at least 30 miles, no damage. I checked every single seal including crank seals, no leaks. I think I'm gonna replace the crank seals. Anyways because they are very chewed up, maybe I just didn't spray it right. Thanks for the awesome video man! I absolutely hated the runaway especially in the city where it's so loud at stop lights. Glad you got it running good!

Alex from motored life showed in on of his videos that they make a seal saver for motorized bikes. the high compression motors put a lot of pressure on the magnet side because it’s smaller. It’s a piece of metal that screws in under the magneto so it can’t pop out.

Had and air leak issue on my rig and it took a while to fix, meanwhile I run it like I stole it for almost a year and had no engine damage but I guess is due to high oil mix I am using 25:1.

I'm so glad you did this video.....I am also started a mineralli build and there's limited info so every bit helps... thanks....ride on

Thanks man

I enjoy your enthusiasm I'm new to the sport but I must say is a little carried away.

That's awesome brother I'm so very glad you found it.. can't wait to see how it compares to the ported cylinder

The bike looks great! 👍💯🤙🚴‍♂️💨💨💨✌

I live at 4600 foot elevation. Mine was running to rich so I moved the clip up to the second notch from the top. It was then running perfect except at full throttle. So I ordered jets. I got the wrong jets, so I put the carb back together and back on the bike. Then it was running to rich again. Apparently I had an air leak at the carb mount that I fixed when I put it back on. I moved the clip to the top notch and it's only running rich at full throttle. Now it idles much better. The correct jets are on the way.

my maximum distance on motorized bike is 19 miles as the crow flies one way, via paths and allsorts. i intend to beat this record this summer! its gonna be good!

I like your vid. Going thru same stuff. Stock Exhaust keeps cracking and falling off,and I work so much. I have a surron also. Thinking about getting a Amazon tempora250cc dual sport while I fix the commuter phantom 85cc v3.

I really needed this video!

Hi I just bought a new engine 80cc had it running good noticed the head bolts needed to be tightened so I did that now my bike won't start ..iv only ran about a half tank so far 40:1 I also noticed that I had no smoke coming out the pipe..I checked my plug it looked light gray and brand new still ...iv tried everything good spark, cleaned the carb, checked all electrical seam to check out good ..I'm am so confused why I'm having this problem any help would be much appreciated .

Great video bro!

Holy fuck LA hover bikes you are a wizard! this is like the exact problem I have with my bike right now thanks bro!!!

Once again good job. Keep up the good work your doing. I know you have done this in the past, however you have come a long way. Could you do a video of your best recommendations for beginners. Then what you consider the ultimate configuration to date.

I took off my engine, because of a leak and blow out around the muffler or jog but can not tell but I will try the starting fluid

You know I was thinking about it and I think I might have the same issue thank you

Thank you.

What exhaust is that it sounds crazy good

Here before 100 views!

I thought my idle didn't sound right. I was looking for examples of a correct idle on these motors and I think I finally found it here. My bike idles fairly high and soft and it takes ages for the rpms to drop. The revs drop somewhat faster if I unscrew the idle screw, but then the engine dies if I let go of the throttle of course. I got it to idle better at some point, but I feel like it's gotten worse again. Funny thing is I ran the bike for about 400-500 km already and it seems to run alright. I had the feeling it was running a bit rich though and I found a fairly good spot with the stock jet with the needle at the leanest setting. People tend to say the stock jet is fairly rich so maybe that compensates for whatever problem I have. I was also running very oil rich for maybe the first 200 km and I didn't exactly go soft on it during break in, so now the piston top is really black and it seems there's been blowby happening too cause there's smears under the rings, lol. Well, replacement isn't too expensive. I just hope the eventualy failure won't be catastrophic.

awesome vid man!!

All tuning should be done on a 'normal operating temp engine' Cold means nothing you don't spend most time riding on a cold motor. These carbs have no auto choke and/or no choke at all so it should not idle well if at all when the engine is cold.

That's a good one, personally I use for the crank SKF 6202 TN9/C3 and for the clutch 6202 2RSH/C3 the crank seals the chinese ones...

Do you have another link I could use or could I find this at my local auto parts store? I just want to make sure I get the right size, I'm pretty new to these engines and I have an air leak in the same spot. I have a Zeda 80 Firestorm.

My bike does not idle or start well when it is not choked. If I get it a bit above full choke, it starts and idles properly. Does this mean the seals with the carburetor are the fault?

That's great that you got it fixed.So we all aren't 'searching' for hours,what grease did you use in the seals that won't harm rubber?I used Molybdenum on all the steel parts,including cables before putting them in sleeves,and spray Silicone on rubber,but haven't considered a grease for the seals.Thanks in advance.

You have to modify the pipe to get it to fit?

Mine yesterday was running at a very high idle. So high infact that when comming to a stop I chose to not pull the clutch and let the engine slow me down. I know that doing that can fold the chain up but was scared the motor would over heat. Think that my head gasket isn't sealing all the way.

what kind of starter fluid should i get

what about using crisco as grease?

Could you please remind me what bottom end are you using? Is it a PK80? If so, may need to buy some. I have a brand new PK80 Zeda FS, and she was leaking. Tested for leaks, but not the seals. Too late though. Seat stay bolt snapped, and I botched the repair. Happens when you’re over tired and think you are able to get the job done. Lol. Will need to replace right half, and might as well change the seals while at it. Attempting to JB weld and tap a new 8mm thread…for science sake. Lol. Thanks for the videos as always.

Will flex seal fix the problem

Where did you get the handlebars

I had a marine bike everything was good until I hit a pothole breaking my seat post after that my engine started to destroy itself because of so much vibration the drive sprocket loosened and the chain keeps popping out.

I thought it was a leak in my 212cc bcuz it was only running with choke on so I changed to a bigger jet and it runs dope now💯✨✨✨✨✨✨

Good job easy fix, only thing and I gotta say it because as you know people do what they see cause they think we know the best ways to do this stuff and your amount of viewers is greatly larger then mine, but I wish you put in or if you can add a DO NOT DO THIS AT HOME type of a thing about the spraying starter fluid. It’s extremely flammable and god forbid a kid sees this and just does it thinkin it’s safe to do it. Sorry to sound like a downer I’m not just tryin to look out, but either way great job fixing it. I know what a bummer it is tryin to chase down an air leak like that. Especially when you have more then one or two bikes and you feel like your getting pulled in all ways to fix them and don’t have the time to do it.

what size is the crank seal where did you get it?

Hey guys, My carburetor is leaking gas from the cover area which i think is called a float. Its the NT carburetor with the red cover. I checked my donut it has no holes and it wasn't stuck. Any advice?

what oil did you use to lube the middle of the seal?

Love the look but im going 4 stroke.

hi i get mine started by poping the clutch but then it dies after 10 seconds like the engine doesnt start burning gas or maybe no spark but also the engine never clicks to be able to start it why doesn it click?

Whats the jets you ended up using on the pz20?

Would be nice to do my 2 occ choppers like that

I am using one of my shitty engines as a tester but one test im. Doing is instead of switching rhe seals im using liquid JB weld ard em i know it will work i just want to see how long it will work for

I wish I could figure out as to whether or not my bike can even idle because the second I come to a complete stop the engine is or has been completely turned off way before then maybe my clutch isn’t tight enough or perhaps I’m nowhere near done the buildbecause everyone talks about the two-stroke being able to just idle and sit there to heat up which I would love but mine does not really do that. It’s either move at full speed which is a 20 to 25 miles an hour or nothing which makes turning around or doing a quick U-turn in a small space very difficult, because I have to return it on every single time.😂 One issue that I think would help fix it is having an actual level intake because mine is at quite an angle right now working angle, but not correct angle light level, for example😢

i think my yd100 needs a new seal. it is consuming too much gas and it's kind of weak

Start by swapping out a new carb. For the price keep a spare ready. If that works, you've wacked off half your variables. More. Then see what kind of tuning you have available. To keep from recurring get the ethanol out of your gas (easy) - and switch to a full synthetic oil and lighten up on the lube - max of 40:1 per the label. The ethanol is more trouble than it's worth - and cheap carbs corrode into aluminized jelly within hours - completely a non-starter no pun intended. If the new carb doesn't work - you're up.

Man I just put mine together I just had to order a new CDI when I take the spark plug out it sounds like it's doing what it's supposed to when I put the spark plug in it barely making any sound at all

Nice information.. Can I use Carbu cleaner or WD40 to find leaks ?

Exhaust pipe link?

Just got done with the build on an A 100 Feb 26 winter in Wisconsin have a bit of a rattle on rev any ideas.? Ps first time building one of these.!! I do have a video short uploaded. Pps love the flag.!!! Also how do I know what brand my engine is.?

Will those seals you linked fit a YD100?

wow this is the video i shouldve been watching

i made my exhaust gasket out of thick leather, it hardens when the engine gets hot and works like the stock!

5th like 👍

Hey dude wondering if you or anyone else would know how do I stop the woodruff key falls out of the cam shaft because the bolt keeps coming undone or snaps after 2-3 weeks of riding

In my country, they go crazy for these two, 13:21

What exhaust pipe are you running on that? I've been looking around for a good pipe but all I'm coming across is generic pipes.

Has anyone ever sprayed the flex seal on air leaks

I made a chopper ( bicycle frame) with ape hangers and i still don’t have brakes and has run away multiple times, lemme tell you if you ever have a run away find an up hill slope to slow down and hold kill until it dies (saved my life trust me) or just have good brakes

Could I ask, what seals does the 85cc iron sleeve have? The same as the YD?

me and my brother ours have the same issue. what's crazy is the engine is brand new. thanks for the upload

If anyone is so dumb that they don't know a fluid for Starting an engine isn't going to burn then they should be walking slowly with no gum chewing.It's Ether !Good gosh,even the can warns boobs that it burns.It's nice that you warned them.It shows they can read at least.

Order stock reeds ???? That intake might be your issue personally I never had that issue ever on one of these conversion kits also I never ran spacer plates in my engine not really sure how to help you here but I'm going to order a VM 24 because the VM 20 I have is kind of too small I believe maybe a VM 22??

Every time I lean to the left it revs higher and when I lean to the right it revs down and sometimes dies

anybody know any good sites for cheap individual parts

Air leak detection at idle isn't easy , you pressure test with 6 psi wait 30m it's a real pain . Different world under load conditions as you know . Those cranky seals can leak in only one direction eg vacuum only l heard, painful .In a pinch i used a heat gun to fix up a seal? Luck, can't leave any scratches on the surface when removing them. The reeds, i saw legend Samodel tuber glue them to same shape piece of glass then sand to flatten and thin the graphite to your preferences of tension . What a pain, multiple bikes make things complicated also .

Can an exhaust leak cause similar idle issues as an intake leak?

What if you can't get it to start ?

I have exactliest this same McProblem on my mystery engine. I built me a trike a couple of years ago from a Schwinn stingray chopper, and a Heastrom 24" trike. And I've been fighting everything ever since it seems. Until now it just flat won't start at all! I've had to replace the CDI from a stage II and a coil off of a little 4 wheeler to a mystery coil. Then to the stock CDI coil combo. Had the headgasket leaking so I built one out of copper. Got so frustrated with the whole deal. I pulled the engine and decided to go 4 stroke. So after cutting half of my frame out to mount the 4stroke over the axle. It sucks. I hate it. Can't keep the (mouth full of cuss words ) chain lined up. Turned my whole build into An abortion and now I've given up hope and I don't even care anymore. I quit!!!!!!!!

how did you remove the magnet?

If anyone can help. Why won't my bike start? Like it spits and spudders

That intake is definitely effecting the performance.

And for the phantom owners beware the heads suck they never sent me Emmanuel with my kit and the break-in I guess it's supposed to be 20 to 1:00 and then whatever comes after 20 to 1:00 you're supposed to be running them at now my phantom yesterday blew up cuz I was running 35 to one for breaking and then went to 40 to 1:00 soon as I went to 40 to 1:00 the nickel plated came off a chunk of the aluminum busted and destroyed and I mean destroyed the the piston and the cylinder

First?