Engine runs then dies out

[Guest]

OK, so its only a 50 cc 2 stroke. New petrol and all that. New airbox, battery and plug. The engine starts and runs while the revs are high, and vroom vrooming , but as soon as its left to idle it splutters and dies.

Cleaned the carb, checked for any kinks in the fuel line, adjusted the carb air/fuel inlet. Nothing. Still the same.

Any ideas what else I could try? Its not as if it is a major piece of technological art?

[Pete]

Only one carb? If it's more than one then try balancing them, that helped mine when it had the same problem.

Check the gap on the plug. Even new ones need gapping. Can't think of anything else, sorry!

[Guest]

50 cc, one carb. I wonder if a hose somewhere has a tear in it. That was what was wrong with a Yam, so I might try that.

[Guest]

50 cc, one carb. I wonder if a hose somewhere has a tear in it. That was what was wrong with a Yam, so I might try that.

Carb chimney (Rubber thingy) to engine leaking or carb to airbox.

or is it cold... needs choke..

[Guest]

50 cc, one carb. I wonder if a hose somewhere has a tear in it. That was what was wrong with a Yam, so I might try that.

Carb chimney (Rubber thingy) to engine leaking or carb to airbox.

or is it cold... needs choke..

 

carb to airbox is OK. It is not cold as as it runs for a while when revving it up. I'll check the carb to engine later today. Thanks

[Pete]

Yeah that's a good point. One of the jubilee clips on my carb to engine manifolds had gone (don't know where!), so I replaced it and it smoothed out my idling somewhat. Don't know why I didn't think of that before. Have you checked the blanking cap on the carb...though perhaps it doesn't have one if it's on it's own. Just kicking ideas around.