Two-stroke bike won't start - help

[Quasievil]

Not my R1 as its a yamaha and they dont break down

But the young fella brought his first bike, a moped a 2 stroker and today he finally got his license and is chewing at the bit to have a ride and the fucking thing wont start

so far I have

replaced the plug, checked for spark
checked compression (finger over the hole method)
checked fuel (its getting fuel as the plug comes out wet

and now I dunno what to look at.

Any ideas

any keen mechanics want a box of piss ?

thanks in advance for the help

[DrunkenMistake]

Im a retard when it comes to bike mechanics, butttt possibly a battery, I had a similar problem with my cb125 bucket, had spark but no fire, replaced the battery and it fired to life,
that or give it the old school bumpy bump start

[Katman]

Is it fresh fuel?

[Quasievil]

Is it fresh fuel?

Battery is good, Fuel is two weeks old and 98 oct

do these mopeds have fuel pumps ?

I actually got it going after shaking the fuck out of it and starting it on a slope, after about 50 attempts it went

[eelracing]

If you've got spark and compression and fresh fuel then the only thing I can add is if it's been sitting around for a while is it's possibly flooded the crank-case.

I don't understand these moped thingies but if you can push it around in gear then whip out the plug put it in gear and push the fucker around until you have a coronary.
You should see a shit load of fuel get pumped out the plughole and when it stops...or you have a heart attack...clean the plug and try from there.

Also adjust or replace fuel cock and/or floats.

[Quasievil]

If you've got spark and compression and fresh fuel then the only thing I can add is if it's been sitting around for a while is it's possibly flooded the crank-case.

I don't understand these moped thingies but if you can push it around in gear then whip out the plug put it in gear and push the fucker around until you have a coronary.
You should see a shit load of fuel get pumped out the plughole and when it stops...or you have a heart attack...clean the plug and try from there.

Also adjust or replace fuel cock and/or floats.sounds good, but no gearbox its a auto thing, so guess just push it around ?

[eelracing]

sounds good, but no gearbox its a auto thing, so guess just push it around ?

The beauty of a twostroke Quasi is it's basically just a pump.
As long as the crank/piston is turning over it will pump the fuel out of the crankcase through the sparkplug hole

Auto gearbox's are the devils work and i don't want anything to do with em.

[Quasievil]

The beauty of a twostroke Quasi is it's basically just a pump.
As long as the crank/piston is turning over it will pump the fuel out of the crankcase through the sparkplug hole

Auto gearbox's are the devils work and i don't want anything to do with em.

ok, I actually did that and turned it over for a while with no plug in, I wonder if that was the solution

[Sable]

Tried cleaning the carb?

[jaffaonajappa]

coupla squirts of Engine Start on the air filter....or closer...

[DrunkenMistake]

Im thinking the problem may be, its either chinese or a Honda..

[hayd3n]

needs more strokes

[ajturbo]

You must spread some Reputation around before giving it to DrunkenMistake again.

hahhahahaha:woohoo:

i would go for the honda bit......

helpful buggers eh matey...:innocent:

timing could have moved, but i reckon you should clean the carb, make sure all the jets are clear... it will be something really simple....


and i bet it is for you ya pussy

[F5 Dave]

Well shit Bret, or Brent or whatever. Don't spare the detail will you?

Are you a newebe here?

A 2 stroke you say? geee well now it's clear. oh its a moped, whatever that means.

So it was going before? or no idea? c'mon.

So how does the choke operate? Does it start ok with engine start? (indicating a choke issue).

what is it? history?

[ducatilover]

Blue, orange or yellow spark?

[Quasievil]

I fixed it thanks all

[F5 Dave]

The R1 taking it's name of course from it's predecessor the YR1

http://www.classicyams.com/brochures/brochures/yamaha-yr1-2/c-3/c-brochures.html

in 1967 a far more ground breaking machine & if course more advanced even now as having the correct number of strokes. Almost 45 years ago & hp/litre hardly progressed.

[ducatilover]

Did you do a skid Quasi?

[Racey Rider]

I would have said drain the 98 and use 91 octane. Can make quite the difference.
Keep it in mind if troubles persist.
Racey

[Quasievil]

I would have said drain the 98 and use 91 octane. Can make quite the difference.
Keep it in mind if troubles persist.
Racey

really 2 strokes run better on lower octane ?

[Racey Rider]

Competition two strokes would have reason to run higher octane If There Motors Are Built For It!
But your talking Moped.
Unless it's had compression work done, or spark advance, it's designed to run on 91.
91 will certainly help it Start easier as the flame front burns faster.
and if the motor is old, it's propabley down on compression anyway.

[Quasievil]

Unless it's had compression work done, or spark advance, it's designed to run on 91.
91 will certainly help it Start easier as the flame front burns faster.
and if the motor is old, it's propabley down on compression anyway.

Ok, well there hasnt been any mods done to it at all, its a TOPFUN branded scooter (yes chinese but looks decent quality)
I filled it up with 98 for the young fella perhaps that wasnt a good idea, as since then the problem started !
engine has done 5000kms to btw

[Laava]

I fixed it thanks all

NO, no, no you're not concluding the thread yet surely! No-one has been insulted about their heritage/choice of bike/religion yet!
Here is my 1st bike experience;
1, buy an old run down RT360 yamaha.
2, test ride to be sure it goes
3, get it home and ride it for about 10 min until it stops
4, spend weeks trying to restart the thing, where everynow and then it will fire out the exhaust with a huge long blue flame. Alternately it will kick back like a bastard, jarring every joint in your 14yr old leg
5, finally get up enough courage to start removing things to establish cause, starting with carburettor and culminating in flywheel where;
6, find that flywheel to crank taper fit is more worn than a hookers g string. This has in turn caused the woodruff key, and subsequent replacements, to shear to the point where someone has had to loctite the flywheel on. So it has been revolving bit by bit on the crank meaning that timing is out but every now and then it comes right round again to the point where it fires up briefly or is in the right place to fire up a flooded exhaust pipe full of petrol, scaring, literally, the living shit out of the chooks!
7, by now the cheese like structure of the kickstart shaft housing is worn and starts to crack rendering the whole lot into the parts bin.
Oh joy!
NEXT!!!!!

[DrunkenMistake]

Ok, well there hasnt been any mods done to it at all, its a TOPFUN branded scooter (yes chinese but looks decent quality)
I filled it up with 98 for the young fella perhaps that wasnt a good idea, as since then the problem started !
engine has done 5000kms to btw

Im not going to repeat myself Bret.. :innocent::corn::corn:

[Quasievil]

Im not going to repeat myself Bret.. :innocent::corn::corn:

It aint mine its the young fellas and spec wise it was better than anything else he could find for his money
bikes great, its just a small issue (same that happen with anything)

[Katman]

bikes great,

Keep telling yourself that Brett.

You should be able to convince yourself for at least the next two weeks.

[jaffaonajappa]

It aint mine its the young fellas and spec wise it was better than anything else he could find for his money
bikes great, its just a small issue (same that happen with anything)


Hmmm. But is it triple stitched?
Buy cheap shit, expect it to break. Cant remember who told me that.....jog my memory for me will ya please?

[DrunkenMistake]

Hmmm. But is it triple stitched?
Buy cheap shit, expect it to break. Cant remember who told me that.....jog my memory for me will ya please?

Didnt you have a whinge about Trolling?

Uhh I mean make a thread.

[Quasievil]

Hmmm. But is it triple stitched?
Buy cheap shit, expect it to break. Cant remember who told me that.....jog my memory for me will ya please?

If you emptied your house out of chinese made products how much would be left smart arse?

however, it has better brakes and better rubber than the Yamaha Jog and the Suzuki thing, the Honda seemed overpriced.
So yes the bike is a better deal and was a better over all spec than the jappas, had more storage also and better seat.
Headlights are brilliant so Im happy with the young fellas purchase.
There is no problem now, but I will get the carbs checked out tomorrow.

[Quasievil]

Keep telling yourself that Brett.



Yeah thanks, I will take it to a mechanic tomorrow to get the carbs checked however I know Mechanices are over priced under skilled idiots, but I will risk it.

[jaffaonajappa]

I know Mechanices are over priced under skilled idiots, but I will risk it.


Im not going to say a single thing about how that comment reflects your decision making processes....which led to being happy with a chinese bike.... Not a sound.

[gammaguy]

Ok, well there hasnt been any mods done to it at all, its a TOPFUN branded scooter (yes chinese but looks decent quality)
I filled it up with 98 for the young fella perhaps that wasnt a good idea, as since then the problem started !
engine has done 5000kms to btw


theres your problem right there

someone told the chinese that pushing a moped around for ages was considered"FUN"in western society

so clearly they decided to make one that was an absolute asshole to start,therefore providing those crazeee westeners with "TOPFUN'

Get a Honda sticker for the tank,it might help

[Quasievil]

Actually youre all so knowledgable you must be all correct, I will tell the young fella that his first set of two wheels is a pile of shit
that should make you all satisfied, he like you (im sure) got the highest priced Bike on the market as their first set of wheels.

wankers.

:yes:

[Laava]

Whoops! Sorry dude, looks like my prediction came true!

[jaffaonajappa]

Actually youre all so knowledgable you must be all correct, I will tell the young fella that his first set of two wheels is a pile of shit
that should make you all satisfied, he like you (im sure) got the highest priced Bike on the market as their first set of wheels.

wankers.

:yes:


Good Call mate. Get him a Volvo.....not the ones from Beijing tho!

[kiwifruit]

I know Mechanices are over priced under skilled idiots, but I will risk it.

what a poo. I'm telling Chris on you.

[Quasievil]

what a poo. I'm telling Chris on you.

Nah that was an attempt to give Katgirl a bit of shit :yes:

[DrunkenMistake]

Actually youre all so knowledgable you must be all correct, I will tell the young fella that his first set of two wheels is a pile of shit
that should make you all satisfied, he like you (im sure) got the highest priced Bike on the market as their first set of wheels.



Thats the Fatherly thing to do..
Besides,
Pictures or it didnt happen :sunny:

[Sable]

Most bike shops try to avoid working on Chinese scooters. They're fucking shit. I would have had a Yamaha Jog any day. And I'm definitely qualified to say this having worked in the industry. :facepalm:

[TimeOut]

soooo what was the problem/solution

[Quasievil]

soooo what was the problem/solution

Fuel it would appear, we whacked about 60 kms on it yesterday without a hitch, its great.

[Spearfish]

Hamilton aye, so know he can go hook up up the The Few Mormons left stunting with Carvers Crew?

He'll be scooting over the bridge arches in no time.....

[Quasievil]

Bikes all fixed, you will love this you fucking chinese knockers !!

it was the auto Choke that was fucked, Ironically it had made in JAPAN on it

ha ha bloody ha

[Spearfish]

auto asphyxia is a bugga, if you get to much of it or not enough you run a risk of never getting going...

[DrunkenMistake]

Bikes all fixed, you will love this you fucking chinese knockers !!

it was the auto Choke that was fucked, Ironically it had made in JAPAN on it

ha ha bloody ha

Choke was from Japan, But It was Assembled in China...

Chinese crap.
:shutup::innocent:

[Quasievil]

Choke was from Japan, But It was Assembled in China...

Chinese crap.
:shutup::innocent:


:facepalm:
Fuck up poof

[DrunkenMistake]

:facepalm:
Fuck up poof

Lmao,
Hook, line and Sinker.

243197
:corn::corn:

[jaffaonajappa]

Bikes all fixed, you will love this you fucking chinese knockers !!

it was the auto Choke that was fucked, Ironically it had made in JAPAN on it

ha ha bloody ha

Makes sense to me.....theres been bans against Japan choking the Chinese since 1945.