Kjet Fuel Filter leaking

I can't seem to stop my fuel filter from seeping at the inlet join. I have tightened it up pretty tight but still seem to get a slick that manages to get past the washer.

I am wondering if I am tightening it too much, any idea of toque setting?

I think I might need to replace the copper washers and try again as I imagine I have deformed them now. Any idea of the size?

Any tips? Cheers

How old is your fuel filter?

If any older than 2 years or 20,000 miles buy a new one and replace the washers, 1 side uses same size as sump plug and the other side is smaller but I can remember the size but depending on which make fuel filter you buy there is 1 smaller washer but get another 1 as it's best to replace both on both sides of the filter.

The fuel system is at high pressure so it's easy to get a fuel leak if system not tip top….

There is 2 types of fuel filter depending on age of the car, early cars up to 84 ish have a smaller filter and from then bigger filters was fitted.

MANN filters sometimes come with a washer but all depends on whether is fell out of the box..  

Bit more here…..

https://vwgolfmk1.org.uk/forum/index.php?page=topicview&id=technical%2Ffuel-systems-and_3%2Ffuel-filter-size-help

You do have one washer on each side of the hose union?  

You can re-use Crush washers, if you re-condition them, I found this out years ago.  

Sand them smooth and shiny, (get rid of any Burrs on them with a file or fingernail file.).

Once they are shiny, holding them with a pair of pliers use a Lighter and heat them until they go from shiny to dull or change the color.  

You can then re-use them usually without leaking.
(did it on my Diesel for 10-15 years before I replaced them..didn't live near a Dealer).  The washers aren't that expensive less than a dollar each, and it doesn't hurt to keep a few on hand.

I also wrapped the threads and threads only of the banjo bolts with PTFE Tape.