Testing stock oil filter bypass
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Teching In
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Testing stock oil filter bypass Quick couple questions for you guys
I'm going to do the first oil change on a truck with an lq9 that I got, and I saw that the oil filter bypass is built into the pan rather than the filter. I was wondering if there is any way to test it other than just a visual inspection/seeing if it moves. I have no reason to think it's bad or anything like that so I don't want to get crazy trying to replace it, just am curious and want to learn a thing or two.
Thanks!
Seth
I'm going to do the first oil change on a truck with an lq9 that I got, and I saw that the oil filter bypass is built into the pan rather than the filter. I was wondering if there is any way to test it other than just a visual inspection/seeing if it moves. I have no reason to think it's bad or anything like that so I don't want to get crazy trying to replace it, just am curious and want to learn a thing or two.
Thanks!
Seth
TECH Resident
Joined: Mar 2012
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From: Texas
If it's an LQ9, it shouldn't have a bypass valve in the pan; that's only on Gen IV engines.
IF you, or someone else swapped a Gen IV pan on there, I wouldn't even bother with testing the valve, I would just delete it. Get an appropriately sized bolt, and put that in it's place.
IF you, or someone else swapped a Gen IV pan on there, I wouldn't even bother with testing the valve, I would just delete it. Get an appropriately sized bolt, and put that in it's place.
Bypass is in the pan on gen4 engines, directly above the filter. I buy the delete kits from Summit Racing. Here’s a link…
https://www.summitracing.com/parts/ew1-571997
https://www.summitracing.com/parts/ew1-571997
Thread Starter
Teching In
Joined: Nov 2024
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TECH Resident
Joined: Mar 2012
Posts: 859
Likes: 402
From: Texas
Also, use a bigger oil filter than that one; that short oil filter is intended for the shallow sump F-body pans. You have the clearance for it.
