scooter cuts out while driving By lukenash (Read 1,070 times)

[lukenash]

Hello I have a problem with my keeway ry6 

It starts fine also idles well  but i get about 100m down the road and it cuts out with out any warning !

i then leave it for 20 seconds then it starts again but after 10m it then cuts out again.

can anyone help ?

cheers in advance luke  

[JR]

This is a nice scooter and a two stroker too.

.keewaymotor.com/_d275490303.htm" rel="nofollow" target="_blank">.keewaymotor.com/_d275490303.htm

Question? Have you when it cuts out checked to make sure it's still getting good fuel flow or checked to see if it still has good spark?

JR

[lukenash]

Thank you and yes the fuel flow is good also have just replaced the spark plug spark plug. The air filter is good new piston and rings as well. I have cleaned the carburetor and checked the oil is getting through. My other thought was it might be the auto choke could this be a problem ?

thanks

[alleyoop]

No I do not think it is your ENRICHER, the enricher feeds extra fuel when cold and cuts off the extra fuel after about 3-5 minutes. It if was the ENRICHER it would cause it to bog with to much fuel if it was not cutting off the extra fuel.
It could be the Gas Tank is building up pressure and stopping the fuel from flowing. Try this Crack open the Gas Cap and see if that solves the cutting out.

It sure sounds like a fuel delivery problem by the way have you adjusted the AIR RATIO MIXTURE it may be running to lean.

Here is how to adjust the CARBs mixture:
Alleyoop

thescooterprofessor.proboards.com/thread/3002/2-stroke-carb-tuning?page=1&scrollTo=23302

[lukenash]

Thanks for that and will try that

thanks for the correction in England we use the word CHOKE 

[alleyoop]

People here also call it a CHOKE..LOL
Alleyoop

[lukenash]

definitely not a fuel problem, could it be the choke/enricher or an exhaust problem? 
cheers, Luke 

[churchy]

I had the same problem after i installed a 70 bbk, have you done such thing or installed a performance pipe or performance air filter or messed about with the tuning of the carb?

[alleyoop]

Nov 1, 2013 3:54:56 GMT -6 lukenash said:

definitely not a fuel problem, could it be the choke/enricher or an exhaust problem? 
cheers, Luke 

And how did you come to that conclusion??
Tell me how you tested to determine that.
Alleyoop

[joezip70]

hi iv got a piaggio zip 70 all just been done up race speck it has a 70kit on sports exhaust and a 21mil race carb on with airfilter it starts up fine but when you Rev it to high revs it spluttering but ain't trynna die it just spluttering it had a standard main jet in and it don't work so put a 100 jet it and ran abit better but was still spluttering and then put a 105 main jet in and still the same iv also done there air and fuel mixture and it's still the same could you help me please would love some help thank you in regards

[cyborg]

If the fuel tank cap is venting properly it may just be the automatic fuel valve is shutting down from loss of vacuum