Question about 1999 Audi A4

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A4 2002, problems at starting every day..

A4 1.8T FWD 2002, problems at starting every day.. apprently is the fuel pump?..any suggestion?

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  • Audi Master
  • 22,114 Answers

If this is a diesel fit a non return valve to the inlet supply and one in the return it will save you the cost of having the pump overhauled

Posted on May 27, 2010

  • pbodniza May 27, 2010

    it is a gas fuel pump

  • Colin Stickland
    Colin Stickland May 28, 2010

    please give a better description of whats wrong also when asking a question please state what type of vehicle you have

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Hi Peter, If the vehicle turns on the starter all the time, and sometimes starts and other times fails, check the fuel filter for leakage. Sometimes air gets into the fuel system. When it gives problems, open the bonnet (hood) and have someone pump the pump on top of the filter housing. If it feels soft when beginning to pump, I would suspect either a leakage on the fuel line or the filter housing. If you need to replace the housing and filter, remember to fill the replacement filter with clean diesel fuel first. the glow plugs can also cause problems if one or more have burned out. Regards John

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Could be either. And make sure you don't have 2 filters also.
Find the fuel filter and disconnect the fuel line coming FROM the gas tank.
Be extremely carefull and use a gas can (or jar) or equivilant, put the fuel line in the gas can and have an assistant start the car. Normally if you just turn the car to the 'on' position the fuel pump will pressurize the line anyway. Becarefull you don't have the hose pointed at you or get gas splashed in your eyes (use safety glasses), If the pump is working gas will come out under alot of pressure (again becarefull). If nothing happens then it's the pump. Also check fuses (inside and outside under the hood).

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