What does oil in my STS Intake pipe tell me?
11-19-2005 | 10:58 AM
#11
TECH Addict
Joined: Feb 2004
Posts: 2,120
Likes: 0
I got hold of Dave at STS about the oil leaking through the turbo housings into the exhaust and/or intake. We did not discuss the filter or filter sock but it makes sense to keep them clean and to remove the sock for WOT runs from a dig.
The oil inlet to the turbo has a brass piece in it with a check valve. This valve is intended to keep the oil from flowing into the tubo housing after the vehicle has been shut down. If it does fill up the housing over half way it is possible for oil to flow past the bushings into the exhaust/intake compressor housings. On start up this oil will be forced out the exhaust or into the intake. The idea is to test the operation of the check valve.
Check Valve Test:
1.) Take off the braided oil suppy line at the turbo center housing.
2.) Remove the check valve from the turbo and re-attach it to the braided oil supply line
3.) Place the line over a drain pan and start the vehicle. Let it run for a few seconds until there is a flow of oil through the chack valve.
4.) Shut off the vehicle and place the line and check valve on a few sheets of newspaper. There should not be more than a drop or two of oil leak out of the check valve onto the newspaper.
5.) If it leaks more than a drop or two of oil then get hold of STS and have it replaced. They will probably warranty it if the system is not too old.
6.) If it does not leak re-install the fitting and oil line to the turbo and get hold of STS about possible repairs that may be required to the turbo.
I am hoping to have time to check mine this weekend.
The oil inlet to the turbo has a brass piece in it with a check valve. This valve is intended to keep the oil from flowing into the tubo housing after the vehicle has been shut down. If it does fill up the housing over half way it is possible for oil to flow past the bushings into the exhaust/intake compressor housings. On start up this oil will be forced out the exhaust or into the intake. The idea is to test the operation of the check valve.
Check Valve Test:
1.) Take off the braided oil suppy line at the turbo center housing.
2.) Remove the check valve from the turbo and re-attach it to the braided oil supply line
3.) Place the line over a drain pan and start the vehicle. Let it run for a few seconds until there is a flow of oil through the chack valve.
4.) Shut off the vehicle and place the line and check valve on a few sheets of newspaper. There should not be more than a drop or two of oil leak out of the check valve onto the newspaper.
5.) If it leaks more than a drop or two of oil then get hold of STS and have it replaced. They will probably warranty it if the system is not too old.
6.) If it does not leak re-install the fitting and oil line to the turbo and get hold of STS about possible repairs that may be required to the turbo.
I am hoping to have time to check mine this weekend.
11-19-2005 | 11:29 AM
#12
Originally Posted by Mort
I got hold of Dave at STS about the oil leaking through the turbo housings into the exhaust and/or intake. We did not discuss the filter or filter sock but it makes sense to keep them clean and to remove the sock for WOT runs from a dig.
The oil inlet to the turbo has a brass piece in it with a check valve. This valve is intended to keep the oil from flowing into the tubo housing after the vehicle has been shut down. If it does fill up the housing over half way it is possible for oil to flow past the bushings into the exhaust/intake compressor housings. On start up this oil will be forced out the exhaust or into the intake. The idea is to test the operation of the check valve.
Check Valve Test:
1.) Take off the braided oil suppy line at the turbo center housing.
2.) Remove the check valve from the turbo and re-attach it to the braided oil supply line
3.) Place the line over a drain pan and start the vehicle. Let it run for a few seconds until there is a flow of oil through the chack valve.
4.) Shut off the vehicle and place the line and check valve on a few sheets of newspaper. There should not be more than a drop or two of oil leak out of the check valve onto the newspaper.
5.) If it leaks more than a drop or two of oil then get hold of STS and have it replaced. They will probably warranty it if the system is not too old.
6.) If it does not leak re-install the fitting and oil line to the turbo and get hold of STS about possible repairs that may be required to the turbo.
I am hoping to have time to check mine this weekend.
The oil inlet to the turbo has a brass piece in it with a check valve. This valve is intended to keep the oil from flowing into the tubo housing after the vehicle has been shut down. If it does fill up the housing over half way it is possible for oil to flow past the bushings into the exhaust/intake compressor housings. On start up this oil will be forced out the exhaust or into the intake. The idea is to test the operation of the check valve.
Check Valve Test:
1.) Take off the braided oil suppy line at the turbo center housing.
2.) Remove the check valve from the turbo and re-attach it to the braided oil supply line
3.) Place the line over a drain pan and start the vehicle. Let it run for a few seconds until there is a flow of oil through the chack valve.
4.) Shut off the vehicle and place the line and check valve on a few sheets of newspaper. There should not be more than a drop or two of oil leak out of the check valve onto the newspaper.
5.) If it leaks more than a drop or two of oil then get hold of STS and have it replaced. They will probably warranty it if the system is not too old.
6.) If it does not leak re-install the fitting and oil line to the turbo and get hold of STS about possible repairs that may be required to the turbo.
I am hoping to have time to check mine this weekend.
Let me know what you find on your system!
Tim.
11-19-2005 | 05:41 PM
#13
On The Tree
Joined: Jun 2005
Posts: 100
Likes: 0
From: South River, NJ
On a hard run when I hit 2nd gear, (stupid me, I had the insulators off of the pressure switch under the hood) the contact on the switch hit ground and blew the fuse for the oil pump.
On the track it started to pump white smoke out of the exhaust, I thought it was the heads.
No, it was the oil building up and filling up the turbo, getting past the seals and burning off. Oil was pouring out of my exhaust.
Found the problem, put in a new fuse, lost a 1/2 qt. of oil and smoked pretty good all the way home until I could drop the turbo and clean everything. There was oil in the exhaust, the intake, everything.
So if there is a little leakage in the seals, you will get it under normal conditions.
I am going to work on this this winter.
Thinkin about puttin in a second oil pump that will take over when the primary pump fails for whatever reason.
On the track it started to pump white smoke out of the exhaust, I thought it was the heads.
No, it was the oil building up and filling up the turbo, getting past the seals and burning off. Oil was pouring out of my exhaust.
Found the problem, put in a new fuse, lost a 1/2 qt. of oil and smoked pretty good all the way home until I could drop the turbo and clean everything. There was oil in the exhaust, the intake, everything.
So if there is a little leakage in the seals, you will get it under normal conditions.
I am going to work on this this winter.
Thinkin about puttin in a second oil pump that will take over when the primary pump fails for whatever reason.
11-22-2005 | 06:10 PM
#14
Teching In
Joined: Nov 2005
Posts: 14
Likes: 0
I was running a greddy t78 turbo. I had to send my turbo to dallas to get fixed. The turbo seals made it about twenty thousand miles. Some turbos are better than others that is for sure. But it is a possibility that is it.
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