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Old 11-09-2010, 03:07 PM   #1
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Dirty diesel exhaust

My 330 cat in my 04 winnie journey is leaving residue on rear of rv. Any suggestions?
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Old 11-09-2010, 03:48 PM   #2
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If you attach a catch can or bottle to the end of the breather tube it will end the mist that is coming from the breather. Make sure you leave enough room for the air to escape out the top of the catch bottle. By using an upside down plastic bottle, you can unhscrew the cap periodically to let the accumulated oil out.
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Old 11-09-2010, 04:03 PM   #3
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The thread title is "dirty diesel EXHAUST" ...are you talking about EXHAUST blackening near the exhaust pipe?? ...or OIL SPOTS on the rear of the coach and/or toad??
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Old 11-09-2010, 04:33 PM   #4
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If it's exhaust residue "soot", then check your air filter. A dirty filter will cause more soot.
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Old 11-09-2010, 05:16 PM   #5
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Quote:
If it's exhaust residue "soot" ...
Diesel exhaust is simply "dirtier" than gasoline exhaust. For some reason, the exhaust tip on my coach is shorter than on other coaches of the exact same model, and I note a bit of black on the paint beside the exhaust tip. The coach does not put out any "black smoke," so I don't worry about the little bit of black residue. I have been around diesels all my life, and to me, that's just the nature of a diesel.
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Old 11-09-2010, 06:19 PM   #6
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Change the tip for a down pointed exhaust tip and you'll solve alot of the soot on body issue when soot is produced. As to why the soot? That's an entirely different can of worms.
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Old 11-09-2010, 06:41 PM   #7
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Sometimes dirty injectors cause incomplete combustion from distorted spray patterns in the combustion chamber. I use a quality injector cleaner in the fuel tank every 2 thousand miles or so. Stanadyne is just one brand.
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Old 11-09-2010, 08:42 PM   #8
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I'd bet on a new air filter.
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Old 11-09-2010, 10:31 PM   #9
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Oil spots on the rear of the rv. Up high and down entire rear, as well as the front of towed vehicle.
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Old 11-10-2010, 07:22 AM   #10
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As Chuck1935 says - You need a "slobber tube" catch container. Easy to make.
We had the same problem and made one @ 15,000 miles ago which took care of the problem. BE SURE and put some steel wool in the container as it "catches the oil" from the exhaust mist.
Search "slobber tube" for discussion
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Old 11-10-2010, 09:40 AM   #11
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Man I sure wish I had diesel soot on the rear of my MH. I thought that was what we all wanted some day. Kind of a right of passage.
Untreated Diesel exhaust is cleaner that any untreated gasoline engine exhaust. Plus you go further on a gallon.
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Old 11-10-2010, 10:00 AM   #12
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Quote:
Originally Posted by PONCHO View Post
Oil spots on the rear of the rv. Up high and down entire rear, as well as the front of towed vehicle.
Could be a slobber tube problem. Question, have you had your oild changed recently? If so did they overfill the crankcase? That can lead to more coming out of the slobber tube. OR...check under the engine on the oil filter side. Do you see any oil coming down the side of the block from the oil filter casting? If you do, you have the same problem I experienced earlier this year. You'll need new gaskets and seals behind that casting that connects to the block from the oil filter. I know that this is a fairly common failure on our 3126s, not sure if it affects the C7s.
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Old 11-10-2010, 01:48 PM   #13
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Hey chuck, thank you. I am new at this diesel thing. Appreciate the reply.
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Old 11-10-2010, 01:56 PM   #14
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Thank you ray,in: Will check that out.
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