Help - New CDI needed apparently

[gjm]

Hi,

I have just bough a new Baotian -12 50cc scooter, it is only 2 weeks old. After a week I was on my way to work when the scooter cut out while I was going round a roundabout and I had trouble getting it started when it did start it would die as soon as I touched the throttle, after 15 mins or so it started and stayed on long enough for me to get to work, about 2 miles, I then did a 15 mile return trip on it and it was fine, so I put it down to a one off. The next morning the same thing happened on my way to work ie it cut out, wouldnt start etc. I got it going but it would only do about 15-20mph down hill! I phoned the dealer who told me to take it to my nearest bike shop, as the warranty is for parts only I had to pay! They looked at it and found some water in the carbaretar which they removed but this didnt not cure the problem, they say once the scooter hits very low revs the CDI is cutting the power or retarding and I should return the scooter to where I bought it from. I picked the scooter up from the shop and it lasted200m before dieing again and it wont start, although if I leave it over night I bet it will! I passed the info back to the dealer who are sending out a replacement CDI, I cant return the scoot as Im in Luton and they are in Kent and it would cost and arm and a leg.

My question is has anyone had this trouble and was it the CDI or could it be something else? and where is and how do I replace the CDI? I'm not to technical but can follow a picture/instructions.

Any info very much appreciated!!

thanks
Graham

[Scootin]

Hi Graham,
Sounds like some bad luck-hang in there The CDI is in the battery box in your floor board. That may be your problem. Carb is the other likely spot for trouble. Since a shop already checked your carb(did they tear it apart? a partially blocked jet can cause troubles like that.) Change your CDI & see what happens. one item to note: The spark plugs that come from the factory are notoriously bad. As soon as possible-change that plug for a better one. I believe the correct plug to look for is the NGK C7HSA. Good luck

Chris

[enu06]

It sounds very much like the cdi, your dealer is replacing it so time will tell.
You are lucky that you found a bike shop that would help you, some wont touch 'em.
These bikes do have teething troubles, just like Honda or any other, BUT you are not paying for the advertising, dealer net-work and back-up, so its swings and rounderbouts.
On the bright side, it wont take you long to get to know your bike and do the jobs yourself, and save your money, and of course you have this forum to help, its been said some one has had your problem, and we have the answer in here, so just ask.
I take it your dealer is Baotian UK, reputed to be one of the best dealer in the UK you might be re-assured to know.
Good luck and safe riding.

[Scootin]

I stongly recomend downloading the service manuals off the forum's main page. They are very helpful.

[gjm]

Hi,
Thanks for the responses, the shop say they stripped the carb so fingers crossed thats ok, I now have the scoot back so Ill be fiiting the CDI when it gets here. Have downloaded the PDF's but I it wont let me print the service manual, hey ho. Ill let you know how I get on.

thanks again.
Graham

[enu06]

As per another simular problem in disgusion at present, I think you would need the NGK c R 7hsa plug ( 'R' = resistor).
I have had 1 in my 125 for 2500mls and not missed a beat.

[Macrofeet]

if you have a multimeter i'd check the coil also when fitting the cdi

[gjm]

Help please!!

I have changed the CDI, the spark plug and the battery is fully charged but the problem still persists, I have pushed the scooter further than I have riden it!

any help much appreciated!!

Thanks
Graham

[Simar]

Have you checked all wiring blocks/connections, earth wires etc?

[steviedubs]

Are you sure youv`e got an electrical problem? Try the valve clearences as i had a similar problem last year i.e dying when touching throttle and 15-20mph top speed.After adjusting valves the fault disappeared

[spock]

Having to work on theses things every day, I will tell you that the CDI unit's give little trouble unless you fill them with water when washing your scoot.
Check that the plugs to the unit is not corroded, if OK the fav thing is the side stand kill switch, these cause more grief than anything, especially if they have been left loose for a while or not done up.
The metal tang on the underside of the switch snaps off or bends due to poor maintenance.
A service is not a fix, it is a service, if you do not do daily checks on things or do things up when they are loose, then you get grief!
We get people on the phone with "Hello my exhaust has fell off, what you gonna do about it?"
You tell me the entire exhaust has fell off! all of the bolts have instantly undone themselves and fell off! What you really mean is you haven't checked it and it was making a noise, but as the noise sounded cool you left it alone, then it fell off!

Theses scoots ain't that bad, pay a bit of attention to them and they will be good as gold, any other probs post me and I will try and answer!