blow-by issues

Lewis M

New member
Jul 19, 2012
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Hello everyone, i am pretty new to the forum world so bare with me. I have a 02 lb7. it was brought in with a oil leak. after looking around underneath it for a while i realized the oil was coming from the blow-by tube. this looked unusual for only having 90000 miles on the truck. i replaced the PCV valve and took the cover off the oil cavity that the PCV screws into to make sure it didnt have any trash in it...clean as can be. valve seemed to work but i went ahead and put new one on. still leaked out the blow-by tube. anyone have suggestions on this problem? im kind of stuck on this one. thanks!
 

delong_1

<< my work
Dec 5, 2008
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Arvada, CO
doesnt sound typical to me, none of my motors have every had much if any oil at all even with a hose run down to vent.
Any bad symptons, rough idle, a miss, anything?
 

Lewis M

New member
Jul 19, 2012
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idles and runs great. did have a p1093 code but put a fuel filter on it and solved that problem.
 

Lewis M

New member
Jul 19, 2012
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sorry for taking so long to reply, but yes has lots of fuel in the oil. Has anyone ever hooked up a gauge to the return line coming out of each valve cover? i was thinking about rigging up something like that to measure how much return the injectors were putting out. by doing this i figured i could narrow down which side the injector(s) that are cracked/busted. has anyone else tried this out? Thanks again.