Common Rail blow by
I have a 2007 cummins that has a decent amount of blow-by every now and then. Sometimes I see it and sometimes it is almost non-existent. Besides ring wear is there anything else that could possibly cause this issue? It runs like a top and I maintain regular service myself. I really don't think it is rings because I have no other problems except maybe a couple hard starts here and there when the grid heater doesn't cycle (due to warm enough weather).
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Have you had your oil tested?
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No, never thought about it. What would they be looking for? And what are you thinking they are looking for?
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Originally Posted by Dane07
(Post 1016671)
No, never thought about it. What would they be looking for? And what are you thinking they are looking for?
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well if you get an oil analysis it can tell you if you have high metal content in your oil, possibly indicating broken rings or pistons and such.
im about to have a leak down test done and a compression test because i have been dealing with some lost oil out my blow by tube. i had an oil analysis done and im showing high metal content. |
Originally Posted by Nick060200
(Post 1016688)
well if you get an oil analysis it can tell you if you have high metal content in your oil, possibly indicating broken rings or pistons and such.
im about to have a leak down test done and a compression test because i have been dealing with some lost oil out my blow by tube. i had an oil analysis done and im showing high metal content. Sent from my DROID RAZR using Tapatalk 2 |
iron, copper an lead
possibly tin and aluminum |
Originally Posted by Nick060200
(Post 1016691)
iron, copper an lead
possibly tin and aluminum Sent from my DROID RAZR using Tapatalk 2 |
oh i thought you were asking for yourself, if you did the test......
my last test showed high, iron and copper and elevated titanium. |
Originally Posted by Nick060200
(Post 1016695)
oh i thought you were asking for yourself, if you did the test......
my last test showed high, iron and copper and elevated titanium. Sent from my DROID RAZR using Tapatalk 2 |
Originally Posted by mysterync
(Post 1016694)
They were all high? I've noticed with cr trucks wear metals run much higher when the rockers begin to gall. Creates high wear at the cam, tappets and rockers. Typically won't effect blow by that much unless it wipes the cam out. http://img.tapatalk.com/d/13/07/14/qe7ujemu.jpg
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here is my last test, maybe you have some input.... im losing oil not much but def some missing, maybe 1qt every 2k miles.
the thing is the truck sits a lot and and doesnt get the workout it use to. but like i said im going to have a leak down test done and see whats going on. i suspect one faulty injector but im not sure. i already have new ones ready to go in but i dont want to put them in only to have to pull everything apart again. |
Originally Posted by Nick060200
(Post 1016698)
so would a valve adjustment have prevented that?
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http://img.tapatalk.com/d/13/07/14/8umamuve.jpg
Originally Posted by Nick060200
(Post 1016699)
here is my last test, maybe you have some input.... im losing oil not much but def some missing, maybe 1qt every 2k miles.
the thing is the truck sits a lot and and doesnt get the workout it use to. but like i said im going to have a leak down test done and see whats going on. i suspect one faulty injector but im not sure. i already have new ones ready to go in but i dont want to put them in only to have to pull everything apart again. Sent from my DROID RAZR using Tapatalk 2 |
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