[Cowen49]

Hi First time poster,

My car recently failed MOT on emissions, first advice was to service the fuel filter and replace. I have a new fuel filter and swapping out seems pretty straight forward.

Just one concern, do I need to bleed the fuel system using Ista or can I just swap it out and put the new one in. I've seen some people recommend stating ignition a few times before fully starting the car up to the get the fuel pump to refill the system, any views? It's 2012 diesel 520.

Follow up question if I need to use Ista where would I down load it and which cable should I purchase to connect to the OBD port?

Thank you for any help or advise.

Colin

[SWFLf10]

Originally Posted by Cowen49

Hi First time poster,

My car recently failed MOT on emissions, first advice was to service the fuel filter and replace. I have a new fuel filter and swapping out seems pretty straight forward.

Just one concern, do I need to bleed the fuel system using Ista or can I just swap it out and put the new one in. I've seen some people recommend stating ignition a few times before fully starting the car up to the get the fuel pump to refill the system, any views? It's 2012 diesel 520.

Follow up question if I need to use Ista where would I down load it and which cable should I purchase to connect to the OBD port?

Thank you for any help or advise.

Colin

I don't know much about diesel, but I don't believe there's an issue with having to bleed the system on a gas vehicle. As far as connecting the car to ISTA, I use a simple ENET cable to connect.

[Breach]

The official ISTA instructions do not mention activating the fuel pump after filter replacement, but indeed many people advise either forcing the fuel pump on in ISTA or cycling ignition a few times before starting the engine. Given all issues with the Bosch HPFP on these cars I'd follow that advice even if placebo :-)

[bigzebowski]

After I changed mine, I had to start the car 6-7 time to prime the pump and get diesel to the engine.
Got me a little bit scared but it worked 😀

[Cowen49]

Originally Posted by SWFLf10

I don't know much about diesel, but I don't believe there's an issue with having to bleed the system on a gas vehicle. As far as connecting the car to ISTA, I use a simple ENET cable to connect.

Hi, Thanks for the response so a cable like the below, question how do you plug into laptop as mine doesn't have ethernet port?

Thanks

Colin

https://www.amazon.co.uk/Ethernet-Ye...97812611&psc=1

[SWFLf10]

Originally Posted by Cowen49

Hi, Thanks for the response so a cable like the below, question how do you plug into laptop as mine doesn't have ethernet port?

Thanks

Colin

https://www.amazon.co.uk/Ethernet-Ye...97812611&psc=1

Exactly like that. I use a USB to Ethernet adapter for mine.