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Old 03-20-2017, 11:30 AM   #1
silvrhand
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Well expensive weekend for me..

- car oil pressure dropped
- oil temp started to rise..
- and rod started knocking..

Oil looks like graphite.. joy.. Car was 2 quarts low on oil, and I don't have a leak looking for suggestions on where the oil went.. underneath the car is clean as a whistle..

- John
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Old 03-20-2017, 11:38 AM   #2
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damn.. sorry to hear man.... is there oil in intake, TB etc?

If its not leaking then in theory it was eating it right?... ( or was low period during a change obviously)
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Old 03-20-2017, 12:03 PM   #3
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More information needed. What were you doing just prior? Recent oil change? Miles on car? Year model? Mods?
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Old 03-20-2017, 12:15 PM   #4
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If not leaking oil and level was correct, then it had to have been ingesting it, rings or valve guides. Where you seeing any blue smoke on first start or while running?
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Old 03-20-2017, 12:16 PM   #5
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Quote:
Originally Posted by Durien512 View Post
damn.. sorry to hear man.... is there oil in intake, TB etc?

If its not leaking then in theory it was eating it right?... ( or was low period during a change obviously)
yah it was either low on change, or when I pull it apart I'm going to find massive leakage somewhere internally past the valve guides or something else.
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Old 03-20-2017, 04:12 PM   #6
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Is the car an '09+ with 10.5 qt dry sump?
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Old 03-20-2017, 04:47 PM   #7
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More going on here than 2 qts down in the dry sump whether 8 or 10.5 qt capacity unless the car was on a track at 6-7,000 RPM. Even 2 qts down on a 8qt Z, just driving down the road would not spin a bearing causing the rod knock. The engine would have to be close to out of oil for the low oil to fry the engine.
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Old 03-20-2017, 04:57 PM   #8
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Bummer;
If an oil pump dies it can pull from tank but not scavenge back to tank, oil can be in sump. It will hold the entire tank. Pull sump drain plug with a clean big container.
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Old 03-20-2017, 06:16 PM   #9
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Quote:
Originally Posted by blkbrd69 View Post
Bummer;
If an oil pump dies it can pull from tank but not scavenge back to tank, oil can be in sump. It will hold the entire tank. Pull sump drain plug with a clean big container.
This suggestion seems very plausible...oil pump died....especially with dropping oil pressure and then rod knock.....
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Old 03-21-2017, 09:44 PM   #10
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When's the last time you checked the oil level? 2 quarts would not be unheard of on these cars if you were toward the end of a change interval and beat on it a lot. I agree though that it doesn't seem like even 2 quarts low on your car would matter unless you had sustained g load.
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Old 03-22-2017, 09:33 AM   #11
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this is impossible ls7's only die from dropped valves
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Old 03-22-2017, 10:01 AM   #12
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Yup, sounds like you lost a pump. Sorry for your loss.
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