smoking diesel -

Dodge/Ram Diesel Discussions on all generations of Cummins Diesel powered Rams plus the new Eco Diesel

smoking diesel


Old 08-28-2010, 09:34 PM
pvteyejim is offline
Registered User
Thread Starter
Join Date: Jun 2010
Posts: 3
Default smoking diesel

I have a 2004 Dodge 2500 with 5.9 Diesel. Recently I have noticed a lot of smoke coming from the blow by tube which comes out of the crankcase. I also noticed oil leaking from that same tube. I have 135,000 miles on the truck and it runs great. I burn or lose about a quart every 2500 miles or so. This is not bothering me, it is the smoking. Does anyone have the answer........ Please help
Reply With Quote
Old 08-29-2010, 03:51 AM
01ramcummins is offline
Join Date: Nov 2009
Location: ontario, California
Posts: 129

it might not be much help. but i was once told that if my cummins wasnt dirty. theres something wrong with it. lol. but as for the smoke issue. i have no idea, sorry, as for the oil. mine leaks also. idky, but i was told by a mechanic at my job that works on nothing but cummins that they all leak and hes not sure y but they do. and hes also the one that told me if it aint dirty theres somethin wrong with it. lol i hope i didnt completely waste ur time. but just throwin my 2 cents in there. hope all goes well.

Last edited by 01ramcummins; 08-31-2010 at 05:56 AM.
Reply With Quote
Old 08-30-2010, 06:09 PM
dodgetrucker75's Avatar
dodgetrucker75 is offline
Record Breaker
Join Date: Aug 2007
Location: live oak, ca
Posts: 2,283

the blow by is going to appear smokey, mostly it is just oil vapor, and thats why the tube will leak, the vapor condences going through the tube, sticks to the inside of the tube and will drip a little
Reply With Quote
Old 08-30-2010, 08:27 PM
brettj2408 is offline
Join Date: Apr 2010
Posts: 724

yes is it blue, white or black smoke?
Reply With Quote
Old 05-06-2013, 09:44 AM
donnyv's Avatar
donnyv is offline
Registered User
Join Date: Jul 2008
Location: MI
Posts: 20
Question Similar symptoms on my rig

Originally Posted by brettj2408 View Post
yes is it blue, white or black smoke?
I'm having similar symptoms as well on my 2004.5 Ram 2500 CTD with 144,000 miles on the clock. It's coming out white and quite a bit the past couple weeks so been keeping an eye on it.

Anyone have a solid idea what is causing this?
Any solutions?

Reply With Quote
Old 05-06-2013, 02:10 PM
Jigabop's Avatar
Jigabop is offline
Join Date: May 2012
Location: Renton, WA
Posts: 3,065

coolant in your oil or vice versa?
Reply With Quote
Old 05-07-2013, 01:17 PM
donnyv's Avatar
donnyv is offline
Registered User
Join Date: Jul 2008
Location: MI
Posts: 20

Originally Posted by Jigabop View Post
coolant in your oil or vice versa?
Not that I can see. Probably just gonna take it in to the dealership. I've spent too much on this truck the past 6 months
Reply With Quote
Old 05-12-2013, 06:26 PM
hillbilli's Avatar
hillbilli is offline
Join Date: Jun 2011
Location: ND
Posts: 284

There is bound to be smoke and some drippage coming out of the tube, if it didnt the pressure would build up in the crankcase and blow out all your seals. If your worried about it, take the oil cap off and set it upside down while it is warm and running. If the cap moves off due to the steam and vapors coming out of the oil fill hole, you have a lot of blow-by and might want to get it check out, if it just shakes off b/c of the mighty rumble of the cummins, all is well. If you got some free time you could also take the valve cover off and clean out the CCV breather with some carb and choke spray, that might help some with the dripping.
Reply With Quote

Related Topics
Thread Starter
Last Post
3rd Gen Ram Tech
09-29-2015 01:13 PM
Dart, Demon, and Duster
09-26-2015 09:05 AM
Dodge Charger
09-26-2015 03:27 AM
2nd Gen Ram Tech
09-24-2015 11:35 AM
Dodge Stratus
09-16-2015 04:01 PM

Thread Tools
Search this Thread
Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

Featured Sponsors

All times are GMT -4. The time now is 04:04 PM.

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to and affiliated sites.
  • Ask a Question
    Get answers from community experts
Question Title:
Your question will be posted in: