Tank draining

[owen191]

Hi all,

Have any of you ever drained your petrol tank on the scirocco? Just wondering if there is a easy way to do this? I don't mind unclipping the pipe on the fuel filter and doing it that way but I thought there may be a specific drain plug some where??

Thanks in advance!!

[whiteDevil_170]

Cant help. But Why would you want to do this?

[Cuprabob]

Maybe he's put diesel in it:-(

[Roy_01]

Dissconnect the hose before the filter from the tank lift pump and then put it in a bucket. Cycle the tank pump with vcds. Or use a vacuumextractor / hose to empty it.

[owen191]

Hahaha no.... No diesel in the tank.

Reason being, I seem to be getting through fuel filters like no tomorrow!! Only thing I can think of is there's something not too good In the tank.

Thanks for the replies

[Roy_01]

Or your liftpump is faulty in the tank. Measure the pressure before the fuelfilter.

[owen191]

can you measure the pressure of the liftpump with VCDS?

If you can, do you know the menu/code to select?

[owen191]

think i may have answered my own question...

Checking Fuel Pressure
Prerequisites:


Ignition ON
Engine ON (Idle)
System voltage at least 11.0 V.
Coolant Temperature at least 80 °C


[Select]
[01 - Engine]
[Meas. Blocks - 08]
Group 103
[Go!]
Field 1: Fuel Pressure (Low), Specification: 2800...7200 mbar
Field 2: Fuel Pump Adaptation, Specification: -1000...+1000 %



Group 106
[Go!]
Field 2: Fuel Rail,Pressure (actual): 55% or below is normal at idle


55% to 60% is a gray area, it may be okay, but may indicate a problem

Above 60% implies there is a failure or restriction

Causes of low pressure can include kinks or restrictions in fuel lines

Fuel filter issues including restricted/clogged or incorrect part number

Failing lift pump in fuel tank. We have seen numerous cases of sub-standard quality "factory" replacements in "factory boxes" that were obtained from aftermarket sources and are not sourced from official dealers. This led to troubleshooting problems that were solved by installing correct factory parts. We encourage customers to only install lift pump and fuel filter sourced directly from a VW/Audi dealer.

Group 140
[Go!]
Field 3: Fuel Rail Pressure (High), Specification: 25.0...110.0 bar
Increase the Engine Speed while checking this value, the Pressure has to rise with the Engine Speed.


Group 230
[Go!]
Field 1: Specified Fuel Rail Pressure (High)
Field 2: Actual Fuel Rail Pressure (High), Specification: 25.0...110.0 bar
Field 3: Deviation between specified and actual fuel pressure, Specification: max. 5.0 bar


This video may be helpful:
" onclick="window.open(this.href);return false;


[Done, Go Back]
[Close Controller, Go Back - 06]