CDTi fuel filter connector leaking

Vantheman · 11th December 2022, 17:43

Since changing the fuel filter I have noticed a veeeeery slow leak from the connector going into the back of the filter housing. Only noticed it because there is diesel in the groove around the top of the filter.
I can wiggle the connector quite a bit more than the front one.

From memory I think there is an o-ring around the connector. I haven't been able to find anything relevant on line, but I will measure it - I'll probably measure the front one - and hopefully it will match up with a standard size. Has anyone else had this or know what size it should be, or could there be something else wrong with the connector?

Thanks
Van

Arctic · 11th December 2022, 19:54

Quote:

Originally Posted by Vantheman

Since changing the fuel filter I have noticed a veeeeery slow leak from the connector going into the back of the filter housing. Only noticed it because there is diesel in the groove around the top of the filter.
I can wiggle the connector quite a bit more than the front one.

From memory I think there is an o-ring around the connector. I haven't been able to find anything relevant on line, but I will measure it - I'll probably measure the front one - and hopefully it will match up with a standard size. Has anyone else had this or know what size it should be, or could there be something else wrong with the connector?

Thanks
Van

Hi Van.
Remove the connector and check to see if the O-ring is still in tact, also are you sure when fitting the new fuel filter to the low pressure unit which screws into the filter was the little O-ring present also.

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RogerHeinz57 · 11th December 2022, 20:19

In addition to Steve's sound reply - I have seen a number of these over the years with cracks on the upper housing that the filter screws on to, some don't leak at all even when they look totally beaten up, but some have been a suprise the way they leak. Some of the housings show vice grip marks on the housings where they have been put into a vice too tight to remove the stubburn filter.
Maybe worth a check.

11th December 2022, 17:43	#1
Vantheman Regular poster Rover 75 Saloon Join Date: Aug 2020 Location: Dorset/Hampshire border Posts: 55 Thanks: 27 Thanked 10 Times in 6 Posts	CDTi fuel filter connector leaking Since changing the fuel filter I have noticed a veeeeery slow leak from the connector going into the back of the filter housing. Only noticed it because there is diesel in the groove around the top of the filter. I can wiggle the connector quite a bit more than the front one. From memory I think there is an o-ring around the connector. I haven't been able to find anything relevant on line, but I will measure it - I'll probably measure the front one - and hopefully it will match up with a standard size. Has anyone else had this or know what size it should be, or could there be something else wrong with the connector? Thanks Van

11th December 2022, 20:19	#3
RogerHeinz57 I really should get out more....... A Reasonably Priced Car Join Date: Jan 2014 Location: Burton Latimer Posts: 2,530 Thanks: 408 Thanked 1,064 Times in 712 Posts	In addition to Steve's sound reply - I have seen a number of these over the years with cracks on the upper housing that the filter screws on to, some don't leak at all even when they look totally beaten up, but some have been a suprise the way they leak. Some of the housings show vice grip marks on the housings where they have been put into a vice too tight to remove the stubburn filter. Maybe worth a check.