125 Moped-Electrics fine but wont start

mrbreckles · L Plate Warrior Joined: 11 Aug 2009 Karma :

So, im on my way home, everything working as it should, deccelerating as i approach a set of traffic lights. The lights change to green so im already rolling at about 15mph, as i come to accelerate the bike just loses power and cuts out. All the lights, gauges, horn etc are working (the lights still shining at full strength.
When i try the electric start it ticks over as usual but wont start up. The kick start feels as though it has the usual pressure but won't start off that either.
There are no loose wires anywhere, the spark plug is seated firmly as is normal.
Also there is about half a tank of fuel in there so it can't be that either.

Really need help as ive got the bike locked up and covered but it's been there a week now.

Thankyou for any help Smile

fiery tupp · Trackday Trickster Joined: 24 May 2010 Karma :

Knowing what bike it is may help ? carb or FI , etc Neutral

mrbreckles · L Plate Warrior Joined: 11 Aug 2009 Karma :

ah of course, sorry, rushed post on my lunch break.
Its a Baotian bt125t-12.

just to mention id got the bike at work and then the snow hit so id kept it inside for about a week although i did make sure i started it up everyday for 10 minutes, giving it a good rev now and then.

daz_d_biker · Spanner Monkey Joined: 01 Aug 2007 Karma :

Take your plug out, and test it for a spark.

Check your fuses, check fuel tap is not blocked.

Take the carb off and give it a good clean out.

Check kill switch? Laughing

These are things off the top of my head, systematic problem solving. Obviously check to see if it works when you've changed one thing before you do something else. I can't give much more advice as there are not many details given.

Daz.
____________________
"bikes are replaceable - but a complete nutter aint."

mrbreckles · L Plate Warrior Joined: 11 Aug 2009 Karma :

i wish i could give more details, but sadly im not very knowledgable, when it comes to vehicles anyway.
If it is the spark plug that's the problem, does it usually just happen suddenly?
As for the other suggestions im assuming they relate to a blockage somewhere due to the fuel?

Thanks for the suggestions.

daz_d_biker · Spanner Monkey Joined: 01 Aug 2007 Karma :

Basically your engine needs Air, Fuel and a Spark to work. If it suddenly cuts out without warning it is almost definitely one of those 3 things which is your problem.

So fuel- could be a blockage somewhere, at the fuel tap, fuel filter, one of the jets in the carburettor?

Spark- Spark plug could have gone (quite likely to be the problem). Or, usually the most difficult to diagnose- an electrical problem: Ignition, coil, HT Lead, loose connector, a short, corroded connector or wire. There's loads of possibilities.

Seriously now, have you ACTUALLY checked your kill switch? You wouldn't be the first person to do that.

Daz.
____________________
"bikes are replaceable - but a complete nutter aint."

mrbreckles · L Plate Warrior Joined: 11 Aug 2009 Karma :

Ill have a check on the other issues when i can get a lift. As for the kill switch that was the first thing i checked as I've knocked it with my thumb before and couldn't work out what it was but it's definitely a good suggestiion. Could the problem be caused by water having got into somewhere? It was snowing at the time i was riding. Having said that I've ridden in the wet plenty of times with no problems at all up until now.