12 Valve 2nd Gen Dodge Cummins 94-98 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with P7100 Injection Pumps

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  #11  
Old 06-07-2010, 12:51 PM
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Originally Posted by 85_305


damn a gallon a week until break-in? Thats nuts.
you gotta remember though on a big rig how much oil does it use. a gallon in a peterbuilt is probably only a quart or two in comparison to a 5.9l
 
  #12  
Old 06-07-2010, 04:19 PM
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Ya this is true. Just seems like a lot when you sit back and think about it. A gallon of oil puffed out those stacks a week
 
  #13  
Old 06-07-2010, 08:14 PM
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I believe its kinda puffing with the motor... when you take the cap off the oil fill you can see a little smoke there... Does that mean anything?
 
  #14  
Old 06-07-2010, 09:03 PM
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a little is ok. if it is a steady stream. if it puffs could be a gauld piston
 
  #15  
Old 06-07-2010, 11:03 PM
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I dont think anything is wrong with it.. It looks like a little steam or somthing. The truck has preety much been babied its whole life. My gandpa and grandma have put all the miles on it and they were highway miles...
 
  #16  
Old 06-08-2010, 01:44 AM
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All twelve valves have blowby out of the breather, Mine has needed a drip pan for 13 years.
Ed
 
  #17  
Old 06-08-2010, 10:56 AM
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needed a drip pan?What do you mean?
 
  #18  
Old 06-08-2010, 11:33 AM
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Originally Posted by HAYMAFIA
a little is ok. if it is a steady stream. if it puffs could be a gauld piston
Gauled piston? How?
 
  #19  
Old 06-08-2010, 02:40 PM
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Hello a drip pan goes on the floor of the garage to catch the oil that drips out of the cranckcase breather tube. At one time there was an accessory you could buy that had a small tank with a small round k&n type breather on top and a drain valve on the bottom to catch this oil. I bought one and installed it and it worked for about two months until the breather on top got full of oil and then it driped on the floor anyway, so I took it off and trew it away.
Ed
 
  #20  
Old 06-08-2010, 02:57 PM
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^It's called a catch-can.. which is silly imho for a large diesel like this.

If your truck was blowing oil out the breather tube, other than when you did a fresh fill up of oil where it might have over-filled, you have problems.
 



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