Oil Leak Question
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Instructor
Joined: Nov 2006
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From: Belcamp MD
Oil Leak Question
Started tearing apart the LS1 last week (180k miles) to replace some gaskets along with the corrupt oil pressure sending unit and I found this.
Im assuming both of these valley cover ports (photo 1) are suppose to be bone dry, as the first one. What would cause the rear to be filled with oil?
Also since Im already there I would assume replace the seal/gaskets for the valley cover outlined in green (photo 2)?
Any help is appreciated in advance. Thank you.
Im assuming both of these valley cover ports (photo 1) are suppose to be bone dry, as the first one. What would cause the rear to be filled with oil?
Also since Im already there I would assume replace the seal/gaskets for the valley cover outlined in green (photo 2)?
Any help is appreciated in advance. Thank you.
Last edited by Rclynch82; Dec 16, 2013 at 02:19 PM.
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
There is a seal in that valley cover that keeps the oil in the crank case and it is likely bad. Remove the sensors and replace BOTH seals. I would ALSO make sure that you PCV valve , the piping and fittings are all in proper working order. You would have to have excessive plow by or poor PCV action to get that much oil in the pocket.
Did you have ant Knock Sensor DTC Codes prior to disassembly???
NOTE! The Knock Sensors has a very specific TORQUE that you need to reinstal them.
BC
Did you have ant Knock Sensor DTC Codes prior to disassembly???
NOTE! The Knock Sensors has a very specific TORQUE that you need to reinstal them.
BC
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
If the cover seal is in good shape, i would jjust resue it. Its an aluminum frame with an embossed rubber sel on both sides. They are pretty resiliant.
Looking at the pictures more closely,,, IT COULD HAVE been oil from the sensor leak but, were you leaking/spraying that much oil????
That sensor hole is raised above the plate
I used blue RTV to seal the caps on the cars that I fix:
BC
Looking at the pictures more closely,,, IT COULD HAVE been oil from the sensor leak but, were you leaking/spraying that much oil????
That sensor hole is raised above the plateI used blue RTV to seal the caps on the cars that I fix:
BC
