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

Blow by tube?!!

Old Apr 12, 2012 | 07:02 PM
  #1  
gyayo2012's Avatar
Thread Starter
|
Diesel Enthusiast
Joined: Nov 2011
Posts: 242
Likes: 9
From: mA$$HOLE
Default Blow by tube?!!

Is it normal for your blow by tube to blow smoke while the truck is running idle, only after iv run the truck and let it idle it will smoke?.. just recently started doing this... any ideas?? Thanks!..
 
Reply
Old Apr 13, 2012 | 10:24 AM
  #2  
ricet07's Avatar
Diesel Enthusiast
Joined: Apr 2011
Posts: 456
Likes: 28
From: Argyle,WI
Default

At idle there is less combustion pressure to seat the rings against the cylinder wall and after heating up it will let a little past but shouldnt look like a fog machine under your truck. Check for vacuum leaks too.
 
Reply
Old Apr 13, 2012 | 03:39 PM
  #3  
gyayo2012's Avatar
Thread Starter
|
Diesel Enthusiast
Joined: Nov 2011
Posts: 242
Likes: 9
From: mA$$HOLE
Default

yeah its smoking pretty good.. all my vac looks g00d. notihng out of the ordinary you think my rings are shot?? id love to give her a compresion check do you know what the compression should be at?
 
Reply
Old Apr 13, 2012 | 05:29 PM
  #4  
ricet07's Avatar
Diesel Enthusiast
Joined: Apr 2011
Posts: 456
Likes: 28
From: Argyle,WI
Default

Anything over 400 you should be good. In my opinion i wouldn't want to see less than 375. Also you don't want to see a huge difference between two adjacent cylinders
 
Reply
Old Apr 13, 2012 | 09:46 PM
  #5  
sweetv8s10's Avatar
Diesel Enthusiast
Joined: Nov 2009
Posts: 498
Likes: 20
From: El Dorado Springs MO
Default

If its not useing oil I wouldnt worry about it to much because mine does the same thing but it doesent use any oil so I dont worry about it to much.But thats just my opinion.
 
Reply
Old Apr 14, 2012 | 02:47 PM
  #6  
gyayo2012's Avatar
Thread Starter
|
Diesel Enthusiast
Joined: Nov 2011
Posts: 242
Likes: 9
From: mA$$HOLE
Default

thanks for the help guys im just going to live with it for now. truck runs like a clock so theres no point in trying to fix something that isnt really broken i guess!.. waiting for my buddy to bring me by a comp test ill post up what my reading were, im assuming its all g00d had to bring my bobcat back home today and the truck wasnt complaining so neither sould I
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
|WYG|SS
24 Valve 2nd Gen Dodge Cummins 98.5-02
1
Aug 19, 2015 10:53 AM
rollover
12 Valve 2nd Gen Dodge Cummins 94-98
0
May 5, 2015 07:33 PM
EasTxOilfields
5.9 Liter CR Dodge Cummins 03-07
18
Apr 2, 2015 01:51 PM
12Valvepower01
12 Valve 2nd Gen Dodge Cummins 94-98
30
Nov 11, 2014 10:52 AM
CumminsCrazed
Price Quote - Request A Price
1
Oct 13, 2014 02:35 PM


Thread Tools
Search this Thread

All times are GMT -5. The time now is 03:23 PM.