Draining condensation from fuel filter

v_forty · Oct 10th, 2020, 15:54

Quick question - the service program for a D5 engine shows the filter should be changed every 2 years, and in alternate years the condensation should be drained from the filter housing.

When I undo the bolt on the underside of the filter housing, diesel drains out. Reading a few of the older threads on here, people say they get as much as 400ml of fuel out the canister by leaving the bolt undone.

Is this the correct way of draining condensation, and if so should I be letting all that fuel drain out to also remove any water?

Wgl2020 · Oct 10th, 2020, 19:54

Diesel is less dense than water so any H2O will drain off first.

If you are getting diesel then stop and job done.

AndrasL · Oct 11th, 2020, 15:40

You should not undo the bolt though.

v_forty · Oct 11th, 2020, 20:04

No, spotted that in Vida thankfully!

Welton · Oct 12th, 2020, 08:39

I'd be surprised if anyone ever got any water out of a diesel filter housing.

Oct 10th, 2020, 15:54	#1
v_forty Senior Member Last Online: Apr 21st, 2024 12:35 Join Date: Oct 2010 Location: Cambridgeshire	Draining condensation from fuel filter Quick question - the service program for a D5 engine shows the filter should be changed every 2 years, and in alternate years the condensation should be drained from the filter housing. When I undo the bolt on the underside of the filter housing, diesel drains out. Reading a few of the older threads on here, people say they get as much as 400ml of fuel out the canister by leaving the bolt undone. Is this the correct way of draining condensation, and if so should I be letting all that fuel drain out to also remove any water?

Oct 12th, 2020, 08:39	#5
Welton Premier Member Last Online: Sep 14th, 2021 17:03 Join Date: Feb 2009 Location: Market Harborough	I'd be surprised if anyone ever got any water out of a diesel filter housing. __________________ 2005 S40 T5 SE - Manual. Bilstein B4's. (For Sale) 2010 Citroen C4 1.6 HDi (bizarre Gearbox model). 2010 Renault Twingo (refreshingly simple) 2018 Infiniti Q30 1.6T Business Executive (what's this button do?)

Oct 10th, 2020, 19:54	#2
Wgl2020 Member Last Online: Jan 21st, 2023 17:15 Join Date: Aug 2020 Location: Ormskirk	Diesel is less dense than water so any H2O will drain off first. If you are getting diesel then stop and job done.

Oct 11th, 2020, 20:04	#4
v_forty Senior Member Last Online: Apr 21st, 2024 12:35 Join Date: Oct 2010 Location: Cambridgeshire	No, spotted that in Vida thankfully!

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)