If it also shows signs of over pressure on the inside, then I'd be questioning the oil pump pressure regulator. If it's just the seam and the guts of the filter doesn't show any signs of damage (no signs of the media crushed down and/or the center tube deformed inward to any degree), then it was probably just a bad base seam. Also, if it's counterfeit filter, a look at the guts will probably show if that's true also.
Motorcraft Oil Filter Catastrophic Seam Failure
- Thread starter MaximumMini
- Start date
Well, if you try to warranty the filter with Motorcraft, maybe leave out the part where you worked on the pressure relief valve and spring.
Cut it open and share the pics with us. That filter looks like a victim of an oil pump issue.
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- Apr 13, 2025
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Do you mean Oil Pressure Relief Valve Issue?
It seems obvious the pump is working well.
I don't have the tool to cut it open and the seam is still holding on one side. I have to find a way to cut it open without causing more damage.
Yes, please cut it open and show the insides.
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It looks to me like the entire can was overpressured. The top area of the can looks swollen to me also.
The engine oil pressure relief valve moved normally when installed. Anything's possible but in this case I can't imagine how the engine oil pressure relief valve could have caused this since it was new and recently checked. All it has to do is move a little up and down. It makes much more sense that something in the filter caused this.
from Google....
Stuck Closed:
If the bypass valve malfunctions and gets stuck in the closed position, it cannot relieve the pressure buildup as the filter becomes clogged. This can cause the filter to rupture or deform, potentially releasing debris into the engine.
The thing is....the filter should not have been clogged.
Best way to cut the oil filter open without doing further damage?
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Four pages in and we still have not seen pics of the internals of the original suspect filter.
FWIW, the below link is to counterfeit FL-910S I bought.
https://bobistheoilguy.com/forums/threads/counterfeit-motorcraft-fl-910s.387046/
FWIW, the below link is to counterfeit FL-910S I bought.
https://bobistheoilguy.com/forums/threads/counterfeit-motorcraft-fl-910s.387046/
- Joined
- Apr 13, 2025
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Would you like to tell me how to cut it open without doing further damage?
I've asked numerous times and no reply yet. Do I need to purchase a tool to do this?
I have never cut an oil filter open.
I do not want to introduce damage that was not caused by the over pressure event itself.
Sorry, from the pics it looked like it was about to peel off.
Can pick up a cutter from Amazon at the link below.
https://www.amazon.com/MOCW-Filter-Cutter-Aluminum-Universal/dp/B0B36DX2P1
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How much metal is still connected? From the picture not much. Looks like you can open it by hand.
