Onan MDL-4 fuel filter

[ageless]

I have the Onan gen with the rectangular filter, inlet on bottom corner, outlet, opposite upper corner. I just replaced the filter but noted there was significant fuel leaking from the bottom of the filter. I don't know if it's a design flaw or if there's something missing but I thought it was odd that the two nipples the filter slide onto easily pull out and have no o-ring to seal them in place. Is that normal? I can't see any other sources that could generate a leak. It still leaks heavily with the new filter.

[GJH]

Sounds like you either have a bad filter or didn't seat it firmly. Sure you got the in/out ports in right? Retainer clip not warped?

[ageless]

Sounds like you either have a bad filter or didn't seat it firmly. Sure you got the in/out ports in right? Retainer clip not warped?

I made sure the ports were correct. I'd be surprised if the old AND new filters were bad, they both leak. I questioned the clip, I'll take another look tomorrow

[piripucha]

There are ruber gasquets on the holes of the filter. Maybe one was pushed in when you installed it. They are quiete cumberson to install.

[PeterK]

Been a while since I changed mine but I would also swear to it there are o rings.