Question about 1994 Chevrolet Beretta

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Once car warms up it dies when you press on gas. Then it will not start at all.It turns over but will not start. I am getting fuel and spark.........?

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  • Randy Ross Apr 21, 2009

    I am getting good fuel pressure and spark. Replaced map sensor,plugs,fuel filter. When it is cold it will start and run. It only does this after it has run for maybe 15 - 20 minutes. Once it dies it will not start till next day???

  • carhob May 11, 2010

    when it doesnt start fuel and spark are there! theres no engine trouble codes,did u check if fuel injectors arent cutting off?

  • carhob May 11, 2010

    it can be weak spark,or fuel pressure is too low,semi block fuel filter,pressure regulator,is fuel pressure up to spec.is check engine light on or came on?

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On cars with a carb, you could point to lean fuel mixture. Runs rich enough when it's cold, because the choke makes the fuel mix richer. When it's warm. you no longer have that"rich" mix from the choke and then it's too lean to keep running. Could be a dirty jet, dirt in the carb, Dirt in the fuel. the list goes on. Needs rebuilt or blown out with carb cleaner spray works sometimes. Dissasemble and clean out with compressed air.
With fuel injection, Throttle bodies, it could be a dirty throttle body, injector,etc, Port injection, could be a sensor or some thing controling fuel, a bad couple of injectors, really not sure. Or a sensor of some sort. If you could get it to Auto zone they will scan it for free and tell you what it needs. Hard to put a finger on it with out seeing it. Have you tryed a good fuel cleaner like lucas? Do you run the tank below a quater tank? This will cause troubles. Best of luck, Those Quad four's are a great motor. lbreen

Posted on Apr 21, 2009

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