99 Navigator fuel filter

[dbean]

I've never seen a connector like this!!! How do you get the fuel line off of the filter with the metal collars that go around the ends of the fuel filter. I was expecting just a fuel line hose and a worm clamp, but this metal end type of connector doesn't seem to want to come off without breaking something. I got the locking clamp off just fine. Thought i would "ask the experts" before I cut the ends off and put it on the old fashioned way.

Frustrated :eek:

[ekooke]

There's a special tool made for it to release the collars. I suppose it's the same as on a Mark VIII; on those, some people cut the ends of the old filter off, and then release the locking rings with a BIC ballpoint pen cover cap and take the filter end stubs out of the fuel line connectors. After that, the new filter should just snap into place.

[DJ]

Don't put the new filter on the old fashioned way. A hose clamp system is not used by the factory because the pressure in the fuel line is too high and a hose clamp will not hold. Fuel injected vehicles have much higher pressures than the old carbed setups some of us are used to. The pressure to the fuel rails on the engine is regulated down to the 40 psi range which means the pressure in the fuel line between the fuel pump and the regulator, the filter is between the two, is quite a bit higher than that.