Bike starts, runs for about 10 seconds then dies.

[WKSport125]

Hi, I have a WK Sport 125cc 15 Plate.

I Was washing the bike and I think i got the electrics wet so:

The bike starts first time but will only run for about 15 seconds before loosing all power and dieing (Electrics stay on though)

Then i have to wait up to 5-10 minutes before it will even start up again, I've changed spark plug, oil, oil filter, fuel filter, cleaned the carb and the jets, and it still wont work?

Could it be a bad coil pack or something?

[RhynoCZ]

Could be as well an fueling issue. I get it the motorcycle already dried up.

Check there's fuel in the carburetor bowl the next time you try to start it and it dies. There should be a drain screw there.

If it was the coil, then I normally have the opposite problem. The engine is running fine and then, when the heat builds up, the coil stops working.
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'87 Honda XBR 500, '96 Kawasaki ZX7R P1, '90 Honda CB-1, '88 Kawasaki GPz550, MZ 150 ETZ
'95 Mercedes-Benz w202 C200 CGI, '98 Mercedes-Benz w210 E200 Kompressor

[WKSport125]

If there is fuel then what? Any other ideas? and I'm not sure if the coil is just like broken so it works and just burns itself out?

[jaffa90]

Is the fuel tank breathing to let fuel out?
Sounds like the carb is filling up too slow.

[RhynoCZ]

[WKSport125]

The bike starts, i can hold it at 6k revs for say 15 seconds then it will just cut right out on me?

[jaffa90]

At 6k for 15sec is a long time and the fuel level will drop quick so try it at 1k to see how long before it stops.

[WKSport125]

It dies about the same time aftwards? Any other ideas

[Skudd]

Start it with the fuel tank open, see if it runs, if it does then it is a breather pipe issue. Judith had this on her bike.
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Famous last words of Humpty Dumpty. " Stop pushing me "
Petty Anarchists look at "1984".............. The Visionary looks at "Animal Farm".

[WKSport125]

Do you mean with the fuel cap open? If it runs fine doing that what do i need to do?

[jaffa90]

[RhynoCZ]

[WKSport125]

[Rogerborg]

There's always a chance, but that usually results in not starting at all, or erratic running. Starting, revving up, and then dying does sound more like fuel starvation.
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Biking is 1/20th as dangerous as horse riding.
GONE: HN125-8, LF-250B, GPz 305, GPZ 500S, Burgman 400 // RIDING: F650GS (800 twin), Royal Enfield Bullet Electra 500 AVL, Ninja 250R because racebike

[Hong Kong Phooey]

Thread needs more kinky ho's
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'81 CG125, '97 FZS600 : '99 CBR600F4, '09 KTM RC8

[WKSport125]

[Hong Kong Phooey]

[Rogerborg]