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DIY Guru
96 Ranger-stock
Joined
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637 Posts
Discussion Starter #1
How to cut open an oil filter.


I bought a inexpensive oil filter cutter from Ebay ($38 Shipped)

It is a decent enough tool, simple solid design, with rollers.

Twisted 3 times and the filter can was cut.



It will leave a sharp edge on both the can and the filter mount.



I cut the oil filter that came on a 1.8L BP Mazda engine

Mighty M4612

It has a rubber anti drain back.

I lifted the filter cartridge from the mounting plate.
Nasty as all get out.


Looking around it, I noticed a large rip to the core, This allowed unfiltered oil through the engine.



Also looking into the folds I saw metal flake
 

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DIY Guru
96 Ranger-stock
Joined
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637 Posts
Discussion Starter #2
Taking my pocketknife, I cut the filter media to remove the tin end caps.


Now the tear on both sides of the crimp.



It also has a tin perforated core.


Now, unrolling the filter media, and looking at the bottom of the pleats, I can see just how much metal flake there is.


At this point bearing damage would be a concern.

The whole engine should be pulled down and all oil galleys plugs and jets cleaned and inspected for metal debris in the oil galleys.
 

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DIY Guru
96 Ranger-stock
Joined
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637 Posts
Discussion Starter #4
Yes, Thats the normal deal.

But on engines I send out, I ask that they bring the oil and filter back too. So if an issue I can catch it early on.
 
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