mf 135 primary fuel filter leak

[witzend]

Most of fuel system had to be replaced. Tractor runs and all leaks fixed ... except one. Leaks a steady stream with engine off, even worse when on. Seems to be coming from under the rim of the primary filter housing, but it's difficult to be sure. The whole assembly (head, pipes, olives, seals, o rings, washers, filter and glass) are new. How hard can this be? Clutching at straws now:

Have the 2 (new) square section rubber seals fitted: are they the same?

I may have overtightened the assembly trying to stop it leaking. Possible?

Does the filter go a specific way up?

All suggestions gratefully received ...

 

[Jerry/MT]

Make sure an old o-ring or old seal is not still on the filter head.

 

[Phil Tibbetts]

Some of the filters I have bought come with several different size seal rings. Are you sure you are using the correct one?

 

[gbs]

common problem is the top sealing ring gets twisted when being installed into the housing