Motorized Bike wont start Solutions

I outline here the common problems associated with no start conditions on a motorized bike
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[@brianamato1078]

My two cents for what it's worth: I thought my new BikeBerry kit was junk when I first put the bike together. I just couldn't get it started. I wasn't getting any spark. I tried everything. I called the 800 number hot line a bunch of times. I did the ohm meter tests with the CDI and the Magneto. The values were all within range. I changed spark plugs three times. What it came down to was: I wasn't peddling fast enough!! The magneto (at least mine) just wont make spark unless it's really turning over at a pretty good clip. Once I figured that out, I pedal the bike to a very fast speed when I can (I'm an old dude and this is hard on me) and then release the clutch and it usually pops and starts up fine. One other tip: when you need to come to a stop for what ever reason and you've pulled in the clutch and sitting there pulsing the throttle.....when it's time to take off again, don't just release the clutch and twist the throttle like you would a motorcycle. You'll stall the engine. You gotta start peddling again to get the bike moving before releasing the clutch. It's like every time you start to move, each time is the first time. Don't just dump the clutch. It will stall and you'll think (like me) something is wrong with your engine setup. Good luck.

[@princeismailmirza9789]

Hi. Mine is a pull start one so when I come to a stop I pull in the clutch and it revs so high. Then how am I meant to stop the high revs, and also am I just meant to release the clutch and then pull the throttle? Because I can’t really pedal my bike much as it is hard to because I have a pull start not a pedal one even though it’s a mountain road bike.

[@rafirahmani8718]

Brian Amato hey dude I feel like I didn’t put enough oil, I put a little and filled it with gas it won’t start any suggestions?

[@bigsandwich]

Rafi Rahmani You need to have a specific mix for break in period and after break in. Break-in period should have a 16:1 gas to oil ratio and after that it should be somewhere around 20:1

[@BlownMoneyENT]

Hey ! Was it jerking to a stop when it wouldn’t start? May be may same issue

[@talhakhan3402]

Brian Amato how did u fix it AFTER it stalled? I pulled in the clutch, revved it and now it won’t start up

[@jackplunderbones]

Thanks so much! I just bought a motorized bike that wouldn't start and this video is just what I needed! My bike is now running great!

[@arnobashtar6707]

What was the problem?

[@SuperGrapeAp3]

@@arnobashtar6707with mines i think my fuel line/tank has to be higher and feed into the carb, my filter and lines run bottom to top and i had to turn my carb sideways to feed it, but didnt starts

[@EarnestKegler]

This video did the trick! I had been having trouble starting and when I seen this video and followed the instructions to ride the bike for 2 minutes with it fully choked and then open it wide and hit the clutch. It started right up and that 80cc motor is fast.

[@oscarsalgado1238]

I was having same problem ,I had spark and compression but didn't start ,I dropped a bit of gas on spark plug hole and bam!!! That did the trick!!

[@michaeldrake9601]

Like did u take the spark plug out or jus put it on top of it.

[@Juanchini]

@@michaeldrake9601 we will never know

[@Juanchini]

@@michaeldrake9601 nvm I got what he was saying, he said the whole meaning take off the spark plug then put some gas in it

[@KevinRoehler]

Video still helping. Mine sat a few weeks and wouldn't start. Pulled the carb screw at the bottom to let some fuel through then ran full choke and sputtered. Turned choke off and it fired right up. It was really awesome because the neighbors were outside.

[@codelicious6590]

DUDE! I have to give you a very heartfelt Thank You for this vid!- I had everything double triple checked and I got NADA, I was about to tear the whole Damn thing apart and redo it -the mag looked a little out of alignment, but I watched this vid and went back out and just gave it a few more runs and sure enough, she kicked over finally and runs quite nicely now! This vid saved me lots of time and I don't even know how much money just for reminding me to be patient and keep pedalling that sucker!! Compression and spark!! Thanks.

[@carlseiz1266]

Thank you that really helped my bike wouldn't start until I disabled the kill switch and now it's running thank you that was a big help

[@philtony4890]

The button on the carburetor is a primer button for cold start that will keep ya from squeezing hose

[@psztnrw]

Thank you! My son dropped the bike and I couldn't get it to start. The kill switch was stuck in. What a relief that's all it was.

[@bobbyreynolds1107]

So I have an 80cc motorized bike I've had it for about 2 months. Its been running great but the other day I was driving and it started bouging out so I pulled in the clutch and released it and it will not start so I ordered a spark plug and a coil for it . now I don't have the ignition hooked up never have anyways I just watched a few of your videos on how to fix it thank all of u guys out there for knowing how and taking the time to teach us Bobby Reynolds

[@najemsaid1068]

I have a bike and it will fire up but not start do u know what the problem is??

[@matthewmoodley7110]

also tank vapourlock will likely stall and prevent your bike from starting

[@kalleklp7291]

The "coil" is a CDI unit. It's fed from and triggered by the magneto which sits inside the side cover just after where the clutch arm goes in. The "little button" is a valve that floods the carburetor chamber somewhat like a primer bulb on a chainsaw or weed whacker.

[@cds162]

thanks, just got my bike together and now comes the fun, starting it!

[@atmosrepair]

I am in same spot, cant get first start. But the plug is next to try a different one because I cant see much spark.

[@timharrington5044]

thanks for the help! couldn't figure out what was wrong, just wasn't riding it long enough to get enough gas in it

[@DashzRight]

Hi Thunder, my bike does start with a lot of effort. The thing is it seems the carb is always making the mixture pretty rich, no power slow response... I have done everything but it seems like the carb is defective...

[@dogdogg3336]

I just bought one of these kits when I first got it, it ran fine then, I let it sit over night and now it won’t start. It fires, but won’t run. And now the clutch won’t disengage. And it leaks oil from the top engine bolts, and the muffler.

[@ramirocantujr8870]

Have you found a solution mine happend last night now wont run

[@user-du1sk8hk8d]

@@ramirocantujr8870 i have the same problem too any solutions

[@kaydenyap5677]

might need to tune the carb tk be leaner and also torque down the head bolts to the around 12ft lbs

[@hutchcoservices]

Hey there ThunderHead289. First off , Thanks for the video. I was wondering at what gap did you set your spark plug gap on the champion CJ7Y? I am wanting to swap out the stock plug that came in the kit. Thanks in advance.

[@accu-telhelp3296]

Some people would just hold the plug to the Engine without having it plugged into the wiring harness. I know it sounds ridiculous to explain that, but you’re dealing with the general public.

[@kuiperthehusky]

My issue is it will start and run perfectly but i have to pedal hard and drop the clutch at least 20 times messing with the choke to even get close. When the engine warms up tho it is a lot more reliable to start but it has to be really hot

[@kuiperthehusky]

I fixed btw if anyone has same issue open up the clutch and tighten the star nut while holding clutch plate back to get it as tight as you can

[@gtrman9706]

The spark test was very helpful.Thank you very much.😁😁

[@MattC78]

Pour a tiny cap full of gas straight into the spark plug hole then put the spark plug back in and try to start it.

[@jefftsalote9213]

Dude thanks for the help, bought a new kit and installed it and it stopped running day two.. did all this stuff to try and get it started again and all it needed was a cleaned off spark plug haaha

[@youtubeiscancer]

I've spent nearly 3 days now on trying to get this to turn. Mines a brand new kit. Here is what I've done so far... Checked the clutch made sure its working correctly (from what I can tell yes) Pulled the carb apart and made sure the float and jet and everything else inside of it and that appears to be alright, seems to not have a vacuum issue. Checked for any cracks or holes on the engine itself and don't see anything off hand. Made sure chain is tensioned pretty tight. Swapped out spark plugs and made sure there is a spark (one thing I didn't do yet was gap the new plug. Just thought of that as writing this so I'll give that a go) Fuel ratio as of current was 16:1 but now its 32:1 as there were some suggestions of trying that. At most I can sort of get it to pop when I walk it and or ride really slow with the clutch popped but it has yet to turn over. ... I am starting to get to my wits end, I'm not super mechanically inclined but if anyone has suggestions that I haven't tried I'm willing to give it a shot. Edit: I have also rode it for roughly 20 minutes to get the motor primed even tried pouring a small amount of gas where the plug goes.

[@josiah-006]

I'm having same issue, any success?

[@youtubeiscancer]

@@josiah-006 So far no, however I haven't looked at it much for a few days due to work. One of my co workers suggested double checking the jet and needle and to also potentially try starter fluid. I think it might be a carb problem after all which isn't necessarily the end of the world if it is (they are so cheap anyways) only other thought is its the coil pack was DOA, it sparks though so I'm not sure. A buddy of mine might stop by today and or tomorrow to look at it, if we somehow manage to get it to run I'll let you know what we did.

[@christophecolomb832]

try to reverse the magneto and kail wires, black kail with blue magneto, blue kail with black magneto, and let the wires of ignition plug in as they are presently

[@takeoUup115]

right so I have spark , I have compression and it just stalls out . was running fine let my friend ride it rode fine then about 1 hr later go to start it up and release clutch and tries to go , give gas bogs out , if pull clutch back in it dies instantly .

[@jimbour4846]

i have the same problem any soloution?

[@takeoUup115]

cdi . weak spark , i order new magneto and cdi , new spark plug . Not had a problem since.

[@zacharyeshoo3919]

Does your bike like start to fire up then stop bro. Legit same shit with my bike man ay

[@renaissanceman7004]

the cylinder head bolt maybe it is loosening,that is why it bogs down..i have done it and it works and lastly you should adjust the idle screw in the carburetor.

[@n0sgarage18]

flooding carb?

[@romaaf9954]

Any chance you can provide some guidance on lining up the chain. My chain keeps sliding and jumping off the sprocket. Ive tried hours of lining up the chain tensioner but still no go.

[@slipknotfan2217]

Maybe your engine is lightly tilted

[@luissantos5080]

yeay i got it started it was clutch needed to be adjusted. im so happy thank you for your help. people dont give up just follow this guys videos and you will learn alot even on comments people ate helpfull good luck people im going for a good ride

[@rbeee1001]

I have tried everything you mentioned and still won't start

[@jalenedwin787]

Thanks for the help, will try all of those

[@dest151]

I have to pedal a while before the motor will even turn on,, it would turn on quickly before..

[@nitroneal48]

I have to push the primer button until fuel starts leaking from the carb, and the choke on before mine will start, or it will take me a block to start if I don't

[@shapinsaybikes4611]

This saved me lots of head scratching

[@diamondfailer11]

Thank you. It started right up when i pedalled fast while the choke was fully open.

[@zerofriends6]

the choke tips worked for me. thanks boss.

[@Shitbagg69]

Having a problem to get the chain and medals to move everything all hooked up

[@holiday311]

I've been working on one I bought second hand and mostly put together. I bought a new cdi, new magneto, and I've checked that I do have spark. Bought a new carb. I've peddled my ass around the block more times than I can count and nothing. I'm at a loss at this point. I've tried all sorts of different choke...nothing. Fuel, check. Spark, check. Unplugged kill switch, still nothing. This is frustrating.

[@christhedevYT]

Same problem right here did you fix it?

[@fernandocastillo8026]

@@christhedevYT did you fix it

[@fernandocastillo8026]

Did you fix it

[@christhedevYT]

@@fernandocastillo8026 oh damn, that was so long ago, but yeah I fixed it. For me it was a faulty cdi. Replaced it and it never failed me since then.

[@mikeziegler894]

thanks this information got my bike started...;.

[@qextms]

Can ya help when I ride my motorbike and u let out the clutch and it try's to run the tire get stuck

[@totallynotaseaotter4946]

does the clutch have to be popped to draw gas into the engine?

[@joshuat20k]

I just CANNOT get mine to start..😥 I had tested spark and unplugged the killswitch as well...

[@brucetseng170]

I have problem for my motorized bicycle, I first time start and when I check spark plug is not working also my carburetor is leaking gas.

[@bretttheriault8778]

Did you ever solve the issues

[@ionknowman]

My bike kit runs. But will not stay running. Will ride with pedal assist the whole time. But won't idle and sputter and die. It has great spark. Steady fuel flow. I haven't messed with the motor at all. It's brand new. I can't figure it out

[@fueledbymusic3]

I had just barely finished my kit. I am having a hard time starting it indeed, I pedaled probably a good 2 blocks worth. I removed the spark plug. Appears wet from gas. I also tried with the kill switch disconnected. Still no start. I'm going to continue trying tomorrow.

[@spooniecamper]

Gilbert Arciniega When that happened to me in the beginning it was that the woodruff key popped out of the crank. I put it in and it started right up.

[@januaryblack2021]

i assembled my kit. Peddled. Had a thunka sound. Then clutch locked up while engaged. Couldn't peddle. Tightened clutch flower. Now i can peddle while engaged but no thunka sound. Any ideas? thank you

[@dennisriblett4622]

I Call that little button "the tickler"

[@bigmacboy876]

My engines brand new the clutch and chain are adjusted correctly when I have the clutch out it just drags the back wheel have spark compression

[@melvinsims6125]

It will kick over but it won't hold, it slowly dies out. How do you fix it?

[@codelicious6590]

My idle screw seems to be nothing more than a decoration- I've turned it all the way to the bottoms and all the way out it has no effect. Oh well, who cares.

[@sandymarte8261]

same here, i was about to stick a damn pencil or something in it. stupid idle screw

[@tomsket8554]

So my bike won't start. Getting power to everything but I noticed the magneto has to be set a certain way otherwise it'll throw off the spark timing and will sound like there's no compression until it's back in the right spot. It picks and chooses when the crankshaft wants to turn to the right angle. How do I get the shaft to stay in one spot? Thanks!

[@mattheweasley6291]

cool video thanks. im having a little trouble with mine i think its the spark plug.

[@jakemcgann6503]

What should i do if my engine is not trying to start when i leave the clutch out the back wheel just locks

[@kevinmichael3968]

Jake McGann I’m having this problem, did you ever find the solution?

[@jakemcgann6503]

No sorry I got ride off it

[@mrbanana7167]

Might mean you're going too slow/you're too light/road surface or tires aren't grippy enough

[@abububuggy]

I’m having. The same problem. Did anyone find a solution?

[@andrewwaters7154]

abububuggy might need to adjust your clutch, KZbin it

[@zacharyeshoo3919]

When I try starting my motorised bike it starts to fire up but won't go like I'll give it throttle and it will jump a few time but won't fully start. can anyone help please

[@renaissanceman7004]

adjust your idle screw in the carburetor..and tighten your bolts of your cylinder head

[@najemsaid1068]

Yeah same have u fixed it, if u have can u help me

[@TheTechnology1998]

Please help...when i open the clutch arm case,theres a red and black electrical wire hanging loose.I do not know where its wired up to but my 80cc engine wont start..i had this engine atleast 3 months and it ran great until the engine rattled and shut off...please help...i dont know what the problem is...oh and the spark plug works..i have tested it ....so its not the spark plug .......PLEASE HELP!!!

[@bmaluginthevanishingman6034]

I replaced magneto cdi and carburetor and nothing.did it all this morning and won't start

[@bmaluginthevanishingman6034]

Hey I've got a spark but when I take the spark plug out like you say I got the compression it's revving up like it's supposed to when I push it when I put the spark plug in it's nothing

[@robertlawrence2589]

Hi when I'm on my bike,I let out the clutch but there's no life,I have spark and compression,don't no any ideas ?

[@AnthonyDiazSteadicam305]

Mine wont start!! I have tried everything. Spark plug has electricity. What can it be? I'm using Walmart Super Tech TC-W3 outboard 2-cycle oil which is the best oil for jet skis. I use it on my 2004 Yamaha XLT 1200 since I bought it. Can that be the problem? Oil maybe? I'd really appreciate your help!

[@travisaitchison8926]

the gas does not go into the crank case, it goes into the piston chamber for ignition,

[@ThunderHead289]

How do you think the lower crank bearings are lubricated? This is a 2 stroke

[@harrysnyder5997]

+Travis Aitchison really man?? you shdnt speak if u dont know, much less correct others..

[@brandonmoreno9085]

mine pops and won't respond to throttle but if I I starts when I'm lucky it will Rev with out the clutch engaged so it's not the carb I figured but it was running fine the last couple days

[@1H4T3WH3NTh1SHAPPENS]

can somebody help me please!! my motor starts but does not speed up and instead slows down and stays at a really slow pace, it wants to speed up but doesn't

[@ThunderHead289]

Watch my video on carb tuning on the bikes. Sounds rich. Move the slide pin up a notch and play with the curb mix screw and your main throttle slide adjustment. It's a balance between everything

[@luissantos5080]

on your excelorator you have a steel elbow with wire inside ajust it so it comes out more by screwing it one or two turns then tighten bolt or where the cable goes to carbie you can adust the thread make cable tighter. like on your bike brakes how you can ajust it on handles but first make sure everything is tight nothing loose because when riding things shake so once a month check everything is tight good luck

[@empirestatepro]

Hey my chain completely stopped moving when I tried to ride it without the spark plug? Any advice?

[@kevinjanowiak3489]

My bike is sparking and it’s just not completely kicking over I have a exhaust without any baffling it’s shooting flames when’s I drop the clutch a twist the throttle to help it start the spark plug is only 2 weeks old could it be my cdi

[@lesserz6310]

I built mine right before winter last year and rode it for a couple days. It took a long time before the engine finally cranked over. Then with winter I had it sitting out in the shed. Pulled it out today and gas'd it up and man are my legs tired and sore. I just couldn't get it to start up. You think because I had it sit for a while that maybe some gas in the tank evaporated and left more oil then gas and that my be causing my trouble? Gonna try again tomorrow if my legs can handle it. I know it's getting a spark and my kill switch hasn't been a issue that I know of.

[@urmomsahoe1]

You might try emptying the gas out of the tank and the lines and putting new gas mix. Gas isn't supposed to sit for longer than 3 months. After that it gets bad.

[@COOL_CANADIAN]

hi its me again. I'm not getting any combination in my motor. I've changed the spark plugs but nothing. any ideas please and thank you

[@ThunderHead289]

+COOL CANADIAN combustion? pull a plug and hold it to the head with your engine hooked to the rear wheel and either run down the road at night, or spin the wheel in the configuration in the garage. if you spin it fast enough, you should see a little weak a$$ purple spark. no spark = no run. if this is your issue, we will go from there.

[@COOL_CANADIAN]

i cleaned the spark plug and it for some reason worked :/ thanks though! i also did check to see if there was a spark and both spark plugs did spark. i guess the carbon from the combustion in the motor got the spark plugs dirty.

[@COOL_CANADIAN]

hello it's me again but i have a problem again. i had it work perfectly for 3 months and then i started it today and once i got up to maybe 30 km/h it just died for no reason. any ideas please. also i'm getting lots of compression but know combustion

[@ThunderHead289]

test the resistance of the coil with a multimeter

[@COOL_CANADIAN]

ThunderHead289 i think i killed it then i followed a video by BikeBerry and i'm getting different readings :/

[@gmoneyga84]

what should the gap be on the champion plug?

[@jamesmata2945]

put my bike together and want to ride but my bike wont start it just kinda turnsover and then dies out. i put a NGK spark plug and it sparks. what should i do please help

[@ThunderHead289]

Ride it for a few miles with the choke fully closed - it takes awhile to fire up the first time because it needs the fuel to saturate the crankcase

[@jamesmata2945]

ThunderHead289 is fully closed when the switch is up or down?

[@jamesmata2945]

And when you say to ride it do you mean with the clutch released or just ride it like a normal bike?

[@ThunderHead289]

James Mata it’s been a long time, but I believe it’s flipped up for choke. Then pedal it with clutch out turning the engine over. It takes awhile to prime the engine the first time

[@jamesmata2945]

ThunderHead289 its hard to pedal when I have the clutch released do I just fight it? Would it help to go downhill.

[@desireytaylorchannel4639]

With a filter like that did you have to re jet the carb?

[@Generation5donny]

I got fuel but no spark on my 80cc motor how do I fix that? It won’t start it was working perfectly fine yesterday even tho it didn’t have spark

[@ThunderHead289]

Probably a dead magneto or coil

[@aztecworrior79]

I have spark coming out of the spark plug the carburetor is good but for some reason when I changed out the piston with the O-rings on it, it didn’t want to start anymore does anything in the motor have anything to do with it starting upBecause my carburetor is brand new and there’s plenty of spark coming out?.

[@aztecworrior79]

And I doubt it’s the Killswitch that went bad

[@robertwade5366]

Yeah well I can't get mine to do a 180 degree Revolution whatsoever it locks up

[@mixingasnhaulinass]

Your spark plug is too big, get a smaller spark plug that does not goes as far down in

[@romaaf9954]

Hello. So been riding the bike for a while but this morning it seems like the engine has ceased. I have taken the spark p,ug out i have removed the chain but I can't get the engine to turn. It won't pedal. Any thoughts

[@ogbenavides8364]

How long would it take when u run out of gas and put gas again now won't run

[@Totalgaming42022]

So if the kill switch is bad when u try starting the bike after pedaling does it turn over then when u slow down it just dies

[@jacketnipple]

Where do you get a test light for the cdi?

[@elliemitchell1686]

Sounds like Nicholas cage so bad ❤️

[@JavierGonzales-to8ye]

What is that tank below your gas tank? Extra fuel?

[@ThunderHead289]

It’s the “boost bottle”. Basically a plenum chamber expansion that assists the efficiency of a 2 stroke port valve engine with no reed valves which the motorcycle bicycle engines are. Smooths out the reversion for much cleaner power and efficiency. Mostly assists with low and part throttle consistency

[@helmetslow2060]

I don't know what state you're in I'm in Ohio I'm not sure what the laws are I think we just need a headlight or you know what I mean a light in the front I never worked on one of these like this before I like to get it done by morning I'm trying to figure out where to line the motor up at oh and I do have one little problem like the front where the u-bolt goes to lock in one of them's broke off so I'm going to have to rig up something for it I don't know can I send you a picture of what I'm working with I'm not sure if I could do it

[@anunbeliever4220]

A good info But refilm it with less clutter and better light Thanks for the tips

[@robh.3124]

Don’t tell him what to do

[@abububuggy]

I’ve just finished assembling this and my back wheel Won’t spin any ideas why? 🤦‍♀️

[@abububuggy]

I got it working. The clutch wasn’t engaging because it wasn’t tight enough. So once I fixed that it worked straight away. Shortly after I lost control while driving it and had to choose between driving into a wall Or a wheelie bin. I chose the bin. Then I got sick into said bin 😂 successful first day I think! 😂

[@SPEEDYTHEROBOT]

Heyy man i can’t get mine to work I bought it brand new and I followed all the steps but I notice when I put the spark plug in the engine doesn’t want to run and then when I take the spark plug out the engine runs perfectly but when the spark plug isn’t in the engine all the air come out from where the spark plug goes instead do you know why is it doing this ?

[@dominicd.666]

Hi I just finished my bike. Everything is in order except one thing. The fuel isn't leaving the carb. I have spark because I checked. I hear the engine turning when I try to start it but there's no fuel. I know there's no fuel because when I checked the spark plug it didn't smell like gas. I've pressed the tickler to the point where it leaked out of the air filter. When I attempt to start it I flip the choke too. What do u think I should do?

[@itechcarezhao389]

Ever find the answer?

[@coreyfellows1945]

My compression is insane and can’t pedal it

[@richardnorris3367]

My bike won't start with the choke on.also runs really rich,no idea what to do or what size jet to buy.

[@ThunderHead289]

its just not adjusted right - when you first fire it up, you need to modulate the throttle to keep her going - but you have 3 adjustments to make - that idle mix screw on the side, the needle on the slide which alters how much your jet flows at rpm, and your screw on the top which alters how much throttle at idle.

[@joeblow5330]

Hey thunder,is that a second fuel line you have adapted to your carberater?

[@ThunderHead289]

+Joe Blow not necessarily, its the line that goes to the boost bottle on my bike

[@joeblow5330]

+ThunderHead289 looks pretty cool thunder. I've got a pretty unique one myself The day before yesterday I tried ran out of gas and kept trying to start it and ruined (I think) part of the fuel line then rode in the rain yesterday and now she refuses to start. Any tips?

[@ThunderHead289]

+Joe Blow ah, your problem is most likely that you got water into your magneto cover. this kills the magneto. pull your plug and check your spark. im assuming there will not be any. you can pick up a new magneto on ebay for roughly ten bucks.

[@09mantlek]

I have tried everything to get my BRAND NEW engine to start. I can drop the clutch and get it to run but it will not run without me pedaling and as soon as i pull the clutch in it dies. maybe i literally need to push it around the block for ages to get it to work but ive been trying for 4 days now so i woulda thought that been enough. I have a consistent spark although have not changed the spark plug. I've made sure fuel is getting into the carb and i primed the engine as you said with fuel in the spark plug hole, sloshed it around a lil. but doesn't make a difference. I will try again tomorrow at just pushing it around with the engine running by pedaling (which is massive hurt on my quads) I will do it for 4 mins but if it doesn't start I can only assume the timing is out. I have checked the magneto and it was touching one side so i recentred that to not touch either side also. I have not disconnected my kill switch however if the engine actually runs that means the switch isn't stopping power to the spark plug. Any other tips you can give me because asking the forums is a waste of time as they ask obvious questions like I'm thick... I just can't get it to "catch" :'( really upsetting me as it's my first one.

[@mrrat9178]

I don't know about you but where I live it's reasonably cold and on cold days the engine seems to reaaaally struggle to start it will make a noise as if its running but it won't fire. From what it sounds like it's not firing the way I get mine to start when it's really struggling is a point it down a big hill pin the throttle about 1/4 / 1/2 and wait for the bike to pick up a lot of speed. Does they bike fire at all as when they fire you can feel it as they kick the bike around a good bit

[@09mantlek]

@@mrrat9178 It hasn't fired at all. I got a big hill right outside my house and I can really bring the RPM up to a point it sounds like it's screaming when I release the clutch and continue pedalling the rest of the hill but it doesn't fire, no signs of it even trying to spring to life. It's about 8 degrees Celsius around here atm so not too cold. I have ordered brand new magneto and CDI. already put new NGK spark plug in. but they are arriving in 2 fucking months time xD (From UK)

[@mrrat9178]

@@09mantlek pahahah unlucky. I dont know then imma assume you've been premixing the fuel w oil.

[@09mantlek]

a rat like being Yh, possibly too much oil for a first start but I’ve used starter fluid but didn’t help

[@mrrat9178]

The first time I started my was with a drill so I don't know if it's the same pedaling it but I remember it took 10m+ at around 0° to get it started. Maybe something like the head bolts are loose I'd try tightening them be careful though as they strip so easy. Make sure you've got the exhaust on as it will start without it but itll just add to your problems

[@ItsReactHQ]

Does anyone know what my problem is?!? It's not sparking but all wires are connected properly? Was working then cut out and didn't work again. Please help!

[@thekingsilverado9004]

+RushyModz It is the most problem common problem out here.. Watch my Harley Bee vids on here... I cover that subject.... It's most likely a bad CDI however the recent kits with the 2 wire magnetos have a tendency to blow right away... Keep Your magneto free of oil grease water and dirt. Never spray sprays or spray oils on the magneto or cleaners on the CDI's... Use an ohms tester on the magneto you should have a reading of about 493 ohms or thereabouts and about 450 to 600 on a CDI and even it the CDI tests good it still does not mean it passing spark thru the wire to the plug...... GUYS LOOK AT MY HARLEY BEE VIDEOS I MADE THE VIDEOS FOR GUYS LIKE YOU AND I INSULT NOBODY EVERYONE IS INVITED TO CALL ME AND THE SHOP AND I WILL GUIDE YOU GUYS THRU ANY PROBLEMS YA GOT ALL THE WAY THRU...

[@israelgarcia5149]

Thanks for the help.

[@wrestle_dream_]

I bought a new cdi and magento and spark plug it still wont start up

[@michaellangdonful]

ThunderHead289: When you're starting your bike for the first time you don't have to pump the throttle first too do you?

[@ThunderHead289]

These carbs have no accelerator pump, blipping the throttle will not do anything. For the first time, put it on full choke, peddle and hold the prime button for about a football field or two. Then open the choke and peddle. She will start if everything is all set right

[@michaellangdonful]

Oh okay. Yeah I have a Mongoose pedal motorbike with a 2 stroke engine that's like that. I've blipped the throttle a few times before but thanks for the advice though on how to start a motorbike up. I won't blip the throttle again.

[@helmetslow2060]

Hey how's it going this is the first bike I'm doing the motor okay the motor and stuff runs I took it off of a mountain bike and put it on a beach cruiser I got big handlebars I'm going to have some issues and I know get any advice I got to swim I'm putting a I guess a china doll with the souped up head I got the round head on the front where spark plug is the better head was 66 bucks they probably costed as much as the motor I don't know I'm going to have questions I mean I'm watching the video of doing the best I can it's my first one

[@focus0574]

While trying to start my 🚲 I let go the clutch and its just free wheel

[@cnclockwork]

Hi, I'm getting spark on my spark plug. I tested it and it's fine. However I just can't get it to start! I spent a week installing this piece of crap engine, and still haven't gotten it to start once. When I pedal and give it gas and let go of the clutch, it just stops my bike and makes a pop sound like the engine is trying to start. What's the issue?!?!?

[@waltersupreme]

Mohamad Azzo same here what is the problem!!

[@evelynfigueroa5043]

Hey I have a question I have a 80cc motorized bike and when I disengaged the cluch the rear tire locks... Can u give me any suggestions ?

[@joewoodward2937]

you have to open the clutch to the motor take off Florida make sure clutch plate pushes in and out properly

[@JakelaWeeze]

My carb isn't sucking fuel. Any tips appreciated...

[@anasdaoudi2288]

JakelaWeeze i have the same problem do you have any tips plz

[@Jeff_Green]

Same with me

[@ohno8968]

Hey poster I got the same bike and am having trouble replacing the ignition coil I rode the bike once and the wires arched of the frame and the bike been sitting for over a year now help !!! Where can I get this coil at ???

[@ThunderHead289]

eBay. Search motorized bike coil. They are ten bucks

[@victorlarraondo9323]

my bike wont start but there is something strange when i open the electric compartment i turn the wheel with the clutch disengaged or in other words without pressing the clutch and when i turn the wheel the magneto magnet moves but when i press the clutch the wheel will move but the magneto magnet wont so i am not sure what could be the problem so far it is supposed to move when i press the clutch not when i release i have 4 months with my engine and i could never get it started , the question is should the magnet move when i release the clutch or when i press it ?

[@ThunderHead289]

victor larraondo that thing should always be moving. should be completely independent of the clutch. find out whats going on there and im sure your problem will be solved

[@thekingsilverado9004]

+victor larraondo The key let loose on the key shaft. The magnet slides in onto a shaft and your engine the magnet should be keyed. I saw two of the newer PK80 bottom ends the magnet wheels had the key fused inside the wheel itself slick work I thought. Anyway the keys are real nightmare on the cheaper engines so take it to a small engine shop with a new key or make one from key stock. Easier said than done for rookies with these engines... Please make a note the magnet has a front and back side. If ya took it off it could also be on the shaft backwards... take it to a small engine shop or local gear head and I don't mean a wannabe parts changer guy... Soemone that knows kinetic 2 cycle engines...

[@romaaf9954]

Thanks for this i seem to have this actual problem where i have spark but bike wont run. I havent actually pedalled for more than a few seconds so ill try the 2 min as you suggest

[@eddieurrutia7588]

Sometimes the carb will gum up. Opening it and cleaning it seems to do the trick for me.

[@rbeee1001]

@@eddieurrutia7588 everything I tried and it still won't start. this is my 2nd engine that won't start????

[@eddieurrutia7588]

@@rbeee1001 Mine just recently went out. Seems to be an electrical issue because I changed the spark plugs. If it doesn’t start it could be the entire electrical components of the bike.

[@rbeee1001]

@@eddieurrutia7588 thanks for getting back with me Eddie. I found my problem. although my plug was showing fire it was not strong enough. I replaced the coil and it started right up. I've been fighting that for days.

[@fernandocastillo8026]

@@rbeee1001 hey I can’t get mine to start I have spark and everything and my magneto is good it’s very frustrating, did you just change the cdi to get a better spark? And that worked for you because my spark does seem a little weak, and is your kill switch connected or no?

[@504Rafiq]

my back wheel doesn't move when i put the spark plug in

[@sleeks9939]

Have you tried holding on to the clutch?

[@ilyaspry9150]

i am having a problem starting it too...when i first got it it wouldnt but iv had it for months now and now it just wont start...when i get on the bike and start peddiling fast and pop the clutch,you hear and feel the engine turning and when i oull the throttle a little you hear noise as if trying to start like...pull vrrrr...pull vrrr but it just wont start i got an extra cdi a new spark plug and it was leaking gas from the carb but i fixed that i just donno what to do now...please help asap. thanks!

[@ThunderHead289]

here is my advice, sorry for getting back to you so late, but I was not notified of this comment. im sure its spark related, pull out your spark plug and attach it to the plug wire and hold the plug to the engine head. run with the bike a bit with the clutch released so the motor is turning. if you do this in a dark enough area you should see spark. if you don't, work through the system to figure out where the failure is. the only other thing that this could be is a loss of compression. if you know you have spark, shoot some carb cleaner, gas, or highly combustible fluid into the chamber(just a little) now quickly reassemble and try to start the bike. if it sputters or tries to start, its carburation issues. hope this helps, sorry for the late reply.

[@joewoodward2937]

Tighten up ur flower nut on clutch

[@ilyaspry9150]

I will try all of these after its not cold outside thanks for the tips I'll get back to you guys tho

[@therealblakekirkham5701]

I think I got dirt in my gas and I ran it and I think the my carb is all gunked up

[@djmanny9082]

I changed the spark plug, carburetor, made a magnet key that hold the magnet and I thought that would solved the problem because it was damage and the magnet kept turning around the bolt at least that's the theory, after all that still no spark, if someone can give me more ideas I would appreciated very much.

[@kalleklp7291]

Check if there is a spark at all. Possible fault..your CDI unit. The thing he refers to as "coil" in the video. A new one wouldn't cost you an arm and an eye..they're pretty cheap nowadays. One from an old scooter will do.