When you go to take off from a dead stop there is no power I could probably run

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faster than car when taking off but once you get going there is power but also a noise when you step on accelerator. When you have to come to a stop again it dies and doesn't want to start again. Have replaced fuel filter. When you go to try and start it, it just cranks over and over and if your lucky it will finally start but when go to stop if you don't put it in neutral and keep the idle up it dies. Please help taxi cabs are getting expensive. Thank you