Car starts and drives but when I stop and try to start it again it doesn't

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Its fine while driving but as soon as I stop and try to start it again it doesn't ,sounds like there's no petrol so the starter works but it won't start, after being pushed a few meters it barely starts then its fine, its a 1600 carburetor citi golf, also there's a loose ground wiring under the bonnet I notices the other day