[Dennis 2ss]

Originally Posted by ctrlz

Good idea.
see if level is high and it smells like gas.

logs.zip

Here is some logs at least. I don't have my car right now as my tuner is working on it but all your help is worth a lot!

[Joshinator99]

Originally Posted by Katech_Mike

Have you checked the oil?

Originally Posted by Dennis 2ss

definitely has oil dilution. 100% smells like gas.

Yep, Mike probably has this sniffed out…probably a bad HPFP

[ctrlz]

Originally Posted by Joshinator99

Yep, Mike probably has this sniffed out…probably a bad HPFP

I would think a failing pump would develop lower pressure, and that would not cause fuel to get past the injectors. I would expect lean problems.

[Owl3]

Could it be a physical leak? Since it's located in the valley maybe the leaking fuel would just end up in the oil returning to the pan.

[Katech_Mike]

Originally Posted by Owl3

Could it be a physical leak? Since it's located in the valley maybe the leaking fuel would just end up in the oil returning to the pan.

Yes.

The internal shaft seal can fail. This causes fuel to dump into the crankcase. If you continue to run it like this it can cause bearing degradation.

This is typically caused from improper pump preload. Usually the pump is bottoming out.

[Dennis 2ss]

Originally Posted by Katech_Mike

Yes.

The internal shaft seal can fail. This causes fuel to dump into the crankcase. If you continue to run it like this it can cause bearing degradation.

This is typically caused from improper pump preload. Usually the pump is bottoming out.

I believe this is what happened.

[KingLT1]

Originally Posted by ctrlz

I would think a failing pump would develop lower pressure, and that would not cause fuel to get past the injectors. I would expect lean problems.

This thread seems to mimic similar issues.

https://www.camaro6.com/forums/showthread.php?t=623067

[ctrlz]

Originally Posted by KingLT1

This thread seems to mimic similar issues.

Sure does.
Yikes, that's a mess!
I would think the entire engine bay would reek of fuel.

[KingLT1]

Originally Posted by ctrlz

Sure does.
Yikes, that's a mess!
I would think the entire engine bay would reek of fuel.

I am pretty sure we are dealing with a similar issue on my brothers C7 Z06 that has H/C 2650 with XDI +65 and LPE HPFP. All of a sudden, the idle fuel trims are -35. No matter what I do to the MAF or VE it doesn't change. Actually, it gets worse as I try to reduce fuel and honestly it should be lean.

[Dennis 2ss]

Originally Posted by KingLT1

This thread seems to mimic similar issues.

https://www.camaro6.com/forums/showthread.php?t=623067

Yup this literally exactly the same as me. This sucks as the LPE pump is 3k. But then again the motor could have gone too...

[Dennis 2ss]

Originally Posted by KingLT1

I am pretty sure we are dealing with a similar issue on my brothers C7 Z06 that has H/C 2650 with XDI +65 and LPE HPFP. All of a sudden, the idle fuel trims are -35. No matter what I do to the MAF or VE it doesn't change. Actually, it gets worse as I try to reduce fuel and honestly it should be lean.

mine had all the same issues but the intake is completely dry. Catch can was completely full of alcohol