Bad blow by after valve springs
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Bad blow by after valve springs
Originally when I purchased my truck I did not loose any oil or have any blow by issues, went on a few long trips, 600 miles or so, and no issues. Recently I installed 60lbs exhaust valve springs with the exhaust brake and I have noticed some serious blow by, loosing about 4q on a 600 mile trip and coating the underside of the truck and tailgate.
I am wondering if I messed up something when I did the valve springs, I have double checked my lash, but was thinking maybe the valve seals have gone or something. Any ideas?
I am wondering if I messed up something when I did the valve springs, I have double checked my lash, but was thinking maybe the valve seals have gone or something. Any ideas?
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There was some leakage from the valve cover seals, but I have since replaced them all and the o-rings. I'm wondering if one of the valve seals popped up or something, are they easy to replace or does it involve pulling the head. I do not think it is a popped head gasket or worn rings as there has been no loss of power or any oil or water mixing in the sump or radiator.
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I just got through fixing a problem with oil blowing out the blowby and painting the backend of the truck. Here's a short vid of the turbo return dropped down into a pan. Just idling, you can see a few bubbles while the end of hose is submerged, but when the flapper is closed it becomes a whole different story. At 2500 rpm it would prolly blow the oil out of the pan.
ps,...Can't make fun of my Boomhauer voice.
ps,...Can't make fun of my Boomhauer voice.
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Originally Posted by GAmes
Originally Posted by lgp9999
How would the oil pressure gauge sending unit cause oil loss?
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#12
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I just got through fixing a problem with oil blowing out the blowby and painting the backend of the truck. Here's a short vid of the turbo return dropped down into a pan. Just idling, you can see a few bubbles while the end of hose is submerged, but when the flapper is closed it becomes a whole different story. At 2500 rpm it would prolly blow the oil out of the pan.
ps,...Can't make fun of my Boomhauer voice.
ps,...Can't make fun of my Boomhauer voice.
#13
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You really can't eyeball the condition of valve seals without removing the spring and seal. At that point you might as well replace the seals while you're in there. It cost me less than $50 using genuine Cummins parts. It gets a little more expensive when you decide that you're going to upgrade the valve springs and install a 4kGSK while you're at it.
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Replaced turbo cus it had plenty of miles on it. I have it on the shelf and will prolly attempt a seal/bearing kit in it, if there's no damage.
Dropping a tube in a pan is a 30 min job at the most. Make sure you have a air tight seal at the connection when sliding hose on.
To be honest, just stop using it as mentioned above and see if it slows down the burping of oil.
Maybe I missed it but did you install the brake and springs at the same time?
Dropping a tube in a pan is a 30 min job at the most. Make sure you have a air tight seal at the connection when sliding hose on.
To be honest, just stop using it as mentioned above and see if it slows down the burping of oil.
Maybe I missed it but did you install the brake and springs at the same time?
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Yes I did the springs and brake at the same time. I will try capping the vac line completely and see if that helps the issue. I would not suspect bad rings or head gasket as there was no loss of power and no white smoke or sputtering and I haven't lost any coolant. I also added a boost elbow around that time and set the wastegate around 30psi so the turbo seals sound more to be the culprit