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Thread: Common rail fuel pressure, what should it be?

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  1. Common rail fuel pressure, what should it be? 
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    I'm having some issues with my 1.9tdi 2010 Leon.
    It has started cutting out when the throttle is shut and the car slowing down. It won't re start until the fuel system is bled (removing return pipe from HP pump to filter) or as the RAC guy did, spraying easy start into the inlet. I've replaced all relays relating to engine control and fuel pump etc.


    I'm thinking the the common rail pressure is dropping too low (HP pump tired or air in pipes) or the sensor thinks it is too low I'm getting no faults from the OBDeleven reader but will try live data later on.
    So does anyone know what fuel pressure is too low or high, or even fuel temp low or high?
     
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  2. Re: Common rail fuel pressure, what should it be? 
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    After some research it's apparent there is no high pressure pump as such as it is a PD engine which has a plunger in each one of the injectors. There is a tandem pump but this is not monitored. I think the fault is pointing to an electrical issue now.
     
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