cb125 won't start...heeellllppppp!

uncleboob · Nitrous Nuisance Joined: 03 Oct 2006 Karma :

Hi there

i have just purchased a 1996 cb125 with a kickstart. I didn't think having a kickstart would make that much difference and the guy i bought it off didn't seem to have any difficulty getting it going- oh what a lesson i have learnt!

I scanned through a couple of other posts but cant make sense of them so i thought i'd ask for some new help. As far as i can figure it (i don't have a manual) ive turned the fuel on, there is fuel in the tank, i've turned the ignition on and the neutral light comes on, i kicked the kickstart and there was a little splutter then nothing Sad

I don't know how to tell whether its a single or twin cylinder and I can't find a kill switch, which i'm assuming would be on the (right?) handlebar so what am i doing wrong?

Someone please help, i passed my CBT last week and really really want to go and get some practice

here's hoping

jo

stinkwheel · Bovine Proctologist Joined: 12 Jul 2004 Karma :

Is it a Honda CB125 or one of those Chinese efforts?

A CB125 twin will have two plug leads and two carburettors.

Are you using the choke?

Kickstart · The Oracle Joined: 04 Feb 2002 Karma :

Hi

Often people tend to open the throttle as they use the kick start, which generally does not help. Try holding the bars with you right hand such that you are not holding the twist grip.

All the best

Keith
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uncleboob · Nitrous Nuisance Joined: 03 Oct 2006 Karma :

hi there

no its a proper Cb125, I went for an older proper one rather than a chinese copy on purpose.....HMMmmmm...

i can only find 1 spark plug so i guess that means its a single does it? And yes i did use the choke, but on or off didn't seem to make any difference, could i have flooded the engine?

If its flooded what should i do to make it better?

take care

joj

veeeffarr · Super Spammer Joined: 22 Jul 2004 Karma :

stinkwheel · Bovine Proctologist Joined: 12 Jul 2004 Karma :

Which of these two?
https://i48.photobucket.com/albums/f216/stinkwheel/cb125.jpg

Robert2014 · World Chat Champion Joined: 20 Nov 2006 Karma :

Hi there il let u in on a little Tip i use my self on kick start bike's ok what to do is Take the Spark Plug out if it's Wet HEat it up and put it back in after say 2 or 3 Kick's Should fire up Stright away and let the bike Warm up or even better take it a run even if the plug is not wet Still heat it up with a lighter and stick it in Allway's work's for me i used to do it to a Chitum i had and that was a 04 plate even it was STolen Reovered lol but still done the trick Failing that if that still dose not do anything Find a hill Or Get sum one to give u a push once u get Going Knock the Bike into Second Gear and let the Cluch out should fire up that way i hope this has help u out
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If you require a mechanic then I am your man. Bike collection and recovery service available. Don't let a monkey work on your bike, call the family run business on 07778 873 184 01505684994 https://www.rdbikes.co.uk info@rdbikes.co.uk

Blau Zedong · Banned Joined: 26 Jun 2006 Karma :

stinkwheel · Bovine Proctologist Joined: 12 Jul 2004 Karma :

Actually, it isn't a twin because only the really early twins had kick starts. I think Toby R must have it, it'll be a CG125. I don't think they were still making CB125 singles in 1996.

Yeah, you probably flooded it. Either switch the fuel and choke off, hold the throttle wide and kick it maybe 20 times until it fires up or switch the fuel off, leave it to stand for half an hour or so then try again.

Or, as RD_bikees says. Take the plug out and give it a clean then try again.

uncleboob · Nitrous Nuisance Joined: 03 Oct 2006 Karma :

What a donut!

I've just checked back and you are all indeed correct it is a cg125 not a cb125...and looks like the first picture...if it were a twin would it have two exhausts?..as mine only has one and one spark plug.

so assuming i've flooded the engine, by tomorrow the fuel would probably have exaporated? If so what should my start up routine be? If it continues to struggle is that indicative of something?

its a real shame 'cause as cg's go this seems to be in quite good condition, bodywork is straight, chrome is shiny etc etc, must admit though, right now i'd rather have a rusty working one...preferably with an electric start!

i've added some picky's

Robert2014 · World Chat Champion Joined: 20 Nov 2006 Karma :

the Good old Cg's Right What to do is Dose not matter if u have Flooded it or not Take the Plug out Clean it and then Heat it up with a Lighter and then Stick it back in Kick it over a Couple of time's and Will Fire up Stright away no need for Choke But u can use a little bit of it Would Like to hear how it go's if u could post a wee message back on here please Cheer's RD BIKE's
____________________
If you require a mechanic then I am your man. Bike collection and recovery service available. Don't let a monkey work on your bike, call the family run business on 07778 873 184 01505684994 https://www.rdbikes.co.uk info@rdbikes.co.uk

veeeffarr · Super Spammer Joined: 22 Jul 2004 Karma :

uncleboob · Nitrous Nuisance Joined: 03 Oct 2006 Karma :

Thankyou everyone for the tips,

if if wasn't so late i'd pop out now and give it a go, but my wife would be upset and the neighbours would complain!

Anyway, i'll try ALL the tips tomorrow (i've taken a day off from work to play) and let you know how it goes...hopefully it will go!

thankyou very much

take care

jo

veeeffarr · Super Spammer Joined: 22 Jul 2004 Karma :

Paddy Blake · World Chat Champion Joined: 29 Jun 2006 Karma :

Compo · Nova Slayer Joined: 02 Jan 2006 Karma :

Hi

One more thing make sure the kill switch is not in the off position.

ta
Compo

uncleboob · Nitrous Nuisance Joined: 03 Oct 2006 Karma :

.....well i tried all the suggestions and guess what? I've just spent the evening riding around on my bike! Yeah, just me and the 40mph beast that is my cG125

thankyou all for your excellent help and kind support, without it i'd still be staring at my non-working bike!

As an aside, i did notice that after a while the bike began to splutter, lurch a bit and struggle, almost as if not enough/ too much fuel was getting into the engine, any ideas why this might be? I was thinking carb if the bikes been sitting for a while- could that have made the internal gubbins sticky? Although for the first 10-20mins all seems okay??? I checked the petrol and there is definetly enough in there- so once again am stumped!

once again thankyou for the top tips and support

jo

befdelta7 · Brolly Dolly Joined: 24 Aug 2006 Karma :

Paddy Blake · World Chat Champion Joined: 29 Jun 2006 Karma :

It would be worth doing a full service including the tappits.

Paddy.

Robert2014 · World Chat Champion Joined: 20 Nov 2006 Karma :

Hiya Just Wondering Did it Start up First time when u wen't out to it this morning ?????????????? Or who's Advice did u Take to get it Running ???? Please let us no
____________________
If you require a mechanic then I am your man. Bike collection and recovery service available. Don't let a monkey work on your bike, call the family run business on 07778 873 184 01505684994 https://www.rdbikes.co.uk info@rdbikes.co.uk

stinkwheel · Bovine Proctologist Joined: 12 Jul 2004 Karma :

If the bike has been sat for a while, it would be worth topping up the fuel tank with fresh petrol. Unleaded petrol can 'go off' within a couple of months.

veeeffarr · Super Spammer Joined: 22 Jul 2004 Karma :

What did you do to get it running?

uncleboob · Nitrous Nuisance Joined: 03 Oct 2006 Karma :

Well, it didn't start straight away when i went back to it,

it just kinda backfired and then gave up! SO i tried to remove the plug, but for some reason my plug socket didn't fit so i couldn't get it out. By this time the battery was becoming V V weak, so i did as suggested and turned everything off and started from scratch.

This time i really gradually increased the choke each time i kicked it over until i found the point at which it began to catch, a few more kicks and it fired up! Hurrah!

I made sure to keep off the throttle and made sure i rested the engine for a bit when trying to start with the choke, so that it didn't flood again.

I reckon i still need to service it, especially since it keeps stuttering, so next day off i'm going to investigate taking the plug out, possibly fit a new one, will check out the carb and maybe think about changing the fuel.

Would i have to empty the fuel out altogether, or just put some new stuff on top?

thankyou everyone- i'll keep you updated with any progress

take care

jo

stinkwheel · Bovine Proctologist Joined: 12 Jul 2004 Karma :

I'd just top the tank up with fresh fuel. Otherwise you'll be left with a load of petrol lying about and nothing to do with it.

uncleboob · Nitrous Nuisance Joined: 03 Oct 2006 Karma :

Hi again

why is it that things always go wrong when your furthest away from help? I took the cg out again this evening confident that all was well-ish and trusting the bond between man and machine...........

.............i should have known better!

Initially all was well, the bike accelerated without any problems, it was a little reluctant at first but then seemed to clear its throat a little and away we went. After plodding around for 30 mins i decided to turn back home and thats when it all went wrong.

The bike would go into gear fine, and would creep along happily, but as soon as the throttle was applied the revs would die right down to the point of almost stalling.I had to half push, half coast the bike all the way home at a top speed of about 2 miles an hour!

I've now topped up the fuel, there wasn't a great amount left so i'm thinking mixing old and new wouldn't make too much difference.

Any ideas about what has gone wrong? I'm thinking of putting it in for a service tomorrow- hoping that its something simple!

take care

jo