Re: Is this right?
Is your throttle cable routed so there are no sharp bends or kinks?
Remove the air filter and look down the inlet throat of the carburetor while twisting the throttle. Watch to see that the moving part ( the barrel or slide ) if you have a two stroke engine with a standar NT carb, is moving freely and returning to the closed position when you let off the twist grip.
If everything looks good then start looking for an air leak. The carb to intake manifold is the first place to check then where the manifold attaches to the cylinder. There are other places but let's start with the simple and most common first.
It helps us if you tell us what kind or engine/carburetor you have. Otherwise we have to make guesses.
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