Question about 2000 Audi A6

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Non starter bought a x reg audi a6 2.5 tdiv6 as a non runner first place i started was changing cam belt and fuel pump belt fuel pump was out by a quater of a turn put it all back together and went to the fuel pump in the tank there was no power to the pump so i power prope it to get fuel up to the filter bleed it to the pump and got lots of fuel to the injectors still wont start. Immobiliser is working ok. any ideas.

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  • helsandal Jan 26, 2009

    i have had the car on a modus snap on diagnostic scanner also a launch diagnostic scanner neither of them showed any electrical fault.I disconnected the fuel feed pipe and the return pipe from the pump side of the filter straight in to ajug of fuel the pump is pulling the fuel in but out of the return pipe is just air so i replaced all of the leak off pipes aswell no different i am starting to think the fual injection pump is knacked.

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No i think your doing it all wrong now on a older car like this the inj pump pulley has a 8mm hole in it and this has to be lined up with coresponding hole in the back platei dont think this old a vehicle is common rail but its timed mechanicaly not electronicly ,it may have a wire from the 3rd injector though so make sure the injector is in the right place in the head .iam not where it should be if it has one?? but i think it has ,if fuel to the injectors then it obvious its not timed right ,havent done a V6 engine before to be honest so iam not sure if they have two belts i know the ford escort diesel has two belts anyway i suspect timing is out somewhere along the line ,although the belt showed one tooth out it could have been adjusted by the three bolts on the gearwheel .Now if this does have two belts line it up to TDC1 then spill time it to be sure you are correct ,You sure someone hasnt played with it where the belts went and valves hit pistons so they put a new belt on or the old one back and put it into auction by any chance??

Posted on Nov 20, 2011

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Yes, try the cam shaft position sensor. Also the crank shaft position sensor. It is on the engine where it meets the transmision. Check the wiring.

Posted on Jan 23, 2009

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