Hi All

My 2011 superb 3.6 is causing me major headsches. Car starts great & then immediately dies. can start it again imeediately no issue but then dies again unless I push the throttle down & get it up to around 25 - 3000 rpm but even then it runs rough & will die again if revs drop Have replaced fuel filter at rear, ensured line from filter to low pressure sensor is clear, have fuel to the in side of the fuel rail(?) . no codes come up when interrogated relating to engine control etc. Is there an easy way to test the HP fuel pump is working correctly? any other thoughts & suggestions are welcomed. Do have misfires on nearly all cylinders when I can get ot to run on high revs.

9 hours ago, bdk said:

Is there an easy way to test the HP fuel pump is working correctly?

With diagnostic software like VCDS you can simply monitor the fuel pressure of the HP fuel pump. For my TSI I think it is around 40 bar during idle and low load, and can go up to 150 bar for full power. Don't know the values for a VR6.

Edited 17 hours ago17 hr by andrehj

Have the plugs and injectors been checked?

Bad misfires sound more like ignition issues to me - or timing.

Edited 16 hours ago16 hr by Warrior193
correction

11 hours ago, andrehj said:

With diagnostic software like VCDS you can simply monitor the fuel pressure of the HP fuel pump. For my TSI I think it is around 40 bar during idle and low load, and can go up to 150 bar for full power. Don't know the values for a VR6.

I dont have the VCDS software, ive been using an Autel Maxisys odbii scanner, where can the vcds software be obtained?

9 hours ago, Warrior193 said:

Have the plugs and injectors been checked?

Bad misfires sound more like ignition issues to me - or timing.

9 hours ago, Warrior193 said:

Have the plugs and injectors been checked?

Bad misfires sound more like ignition issues to me - or timing.

Ive checked the plugs but not sure how to test the coil packs. annoying that it had been running perfectly up to this point, washed the car & then this issue appears. will start first time but only run for 5 seconds then dies. a while ago i had codes for camshaft adjuster control valves, I have bought these but not installed as the codes wnt away & car ran fine. will try to change these out this afernoon, not sure if they are removable externally or need to get to them inside the head

9 hours ago, Warrior193 said:

Have the plugs and injectors been checked?

Bad misfires sound more like ignition issues to me - or timing.

6 hours ago, bdk said:

I dont have the VCDS software, ive been using an Autel Maxisys odbii scanner, where can the vcds software be obtained?

First link in Google... https://lmgtfy.com/?q=vcds+software