[Gary H]

Curious as to why am Oil cooler would be needed? I take it there's no way of flushing it if there's debris?

[SFV1LE]

Originally Posted by Gary H

Curious as to why am Oil cooler would be needed? I take it there's no way of flushing it if there's debris?

Yes, it's always best to replace an oil cooler after an engine failure or you can't be certain what is stuck in there.

You can flush it, but results are uncertain.

[swisstyphoon]

Originally Posted by SFV1LE

The oil goes from the pump through the crank, and straight into your main and rod bearings. I hate to say it but I don't see how fragments like this don't do some damage, and other mfrs would have recalled all ZL1s from the defective pump period (there aren't that many) and replaced the pumps.

They owe all "non-failed pump" affected owners a preventative pump replacement, and all owners who had a failure a 1) new motor or at least 2) full top-to-bottom engine inspection, oil system flush, new oil cooler, lines, etc. and bearings replacement including cam bearings and, new crank or cam if needed.

Probably stuff I'm missing, I'm not an expert that's my .02

It goes through the filter first.
I attached the oil flow diagram.

[GunMetalGrey]

Originally Posted by swisstyphoon

It goes through the filter first.
I attached the oil flow diagram.

Thanks that's good piece of mind to have.

The service manager at my dealership is a friend of mine so I trusted his explanation.

[SFV1LE]

Originally Posted by GunMetalGrey

Thanks that's good piece of mind to have.

The service manager at my dealership is a friend of mine so I trusted his explanation.

That makes sense, I assumed I was missing something important.

Doesn't the pressure bypass valve allow oil flow to bypass the filter when the car is very cold at startup in the morning? In this case if the pump is already crumbling inside metal particles from a failed pump could get past the filter.

For what it's worth, I would ask the service manager to show you the filter and have them cut it open or let you take it somewhere to do that. It may be too late, wouldn't surprise me if the dealer already disposed of it or withheld for GM.

[GunMetalGrey]

Originally Posted by SFV1LE

That makes sense, I assumed I was missing something important.

Doesn't the pressure bypass valve allow oil flow to bypass the filter when the car is very cold at startup in the morning? In this case if the pump is already crumbling inside metal particles from a failed pump could get past the filter.

Not sure

Originally Posted by SFV1LE

For what it's worth, I would ask the service manager to show you the filter and have them cut it open or let you take it somewhere to do that. It may be too late, wouldn't surprise me if the dealer already disposed of it or withheld for GM.

Yeah not a bad idea!

[ZX-10R]

It's not just the oil pump itself. Running the engine on load with low oil pressure will almost inevitably cause some damage, I would want a compression/leakdown check. Furthermore I would never consider buying a used car with a reported oil pump failure. Kind of like buying a car with an accident on carfax

[AZ_1LE]

Originally Posted by GunMetalGrey

Add me to the list of failed oil pumps!
I'm trying to get the dealership to convince me that all of the broken fragmented metal pieces from the oil pump are accounted for.

Ordered a new pump from Katech so it doesn’t fail while on the track.
https://shop.katechengines.com/produ...sump-oil-pump/

Attachment 1064864

There's no need to get a Katech pump, that's just throwing away money and probably voiding your powertrain warranty. GM worked with Melling to revise the pump design and the issue has been resolved.

[SFV1LE]

Originally Posted by AZ_1LE

There's no need to get a Katech pump, that's just throwing away money and probably voiding your powertrain warranty. GM worked with Melling to revise the pump design and the issue has been resolved.

I agree, if you still have a warranty don't install the Katech or GM won't cover damage if that fails. Use the revised pump, I bet it's great now.

You can sell the Katech to someone who is doing significant mods.

[pauly1119]

Originally Posted by GunMetalGrey

Not sure exactly, it's in the shop right now so can't find VIN, received the car May/June 2018

Good luck with your repair, if your able to please post the production date when you can. Its in the drivers door jam.

[Katech_Mike]

Originally Posted by AZ_1LE

There's no need to get a Katech pump, that's just throwing away money and probably voiding your powertrain warranty. GM worked with Melling to revise the pump design and the issue has been resolved.

Melling doesn't make these pumps.

As far as I can tell the "new design" isn't any stronger. I'm going to make a video at some point in the next week or 2 showing why these pumps fail.

[Akura]

Can someone tell us the latest GM oil pump P/N?

Thank you.

[jvandy50]

Originally Posted by Akura

Can someone tell us the latest GM oil pump P/N?

Thank you.

Let me preface this with “i got this number off facebook”...but it was a newer version than what i had, saw a few others using it, so i went with it.

https://sdparts.com/i-24139868-genui...sump-only.html

[Akura]

Originally Posted by jvandy50

Let me preface this with “i got this number off facebook”...but it was a newer version than what i had, saw a few others using it, so i went with it.

https://sdparts.com/i-24139868-genui...sump-only.html

Thank you!