T3rr0r

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RacerX72

I had a similar problem and it was just the 5" hose that goes from the fuel pressure regulator to the head...a $5 fix.

jony_easyrider

Did you managed to solve the problem?
I have the same issue

Thanks ahead for your answers!

jony_easyrider

By the way I have the 1.6 2002 model and I didnát see any hose in the tank.

thermotec2010

caused by the fuel retern line valve sticking slightly open and the pressure over hours drains off so starting difficult after until pressure back up , get your fuel tank at 1/4 full add two bottles of injector and fuel system cleaner and drive until tank almost empty then fill normally , this will clean out the check valve and injectors and your starting problem should be fixed , common Audi problem on gas and TDI , injectors need 10 psi on retern rail or they wont work properly vale supposed to hold it but when dirty or gummed up leaks .

thermotec2010

2 bottles of injector and fuel cleaner will solve at with a quarter of tank of gas , the usual problem is the check valve on the fuel retern rail get gummed and leaks the pressure away when engine off , injectors wont work unless there is 10 psi on the return rail , my Q7 same cleaner in probelm gone next day , before it could take 3 to 4 starts and at least 20 seconds of cranking before fire up , once fired up was fine but after 12 hours off , pig to start , two bottles of cleaner job done , but on a 1/4 of tank and 2 bottles so good concentrated cleaning of the fuel system takes place .