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Old 06-26-2015, 04:03 PM   #1
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Diesel Exhaust Smell in Coach, HELP

We have had diesel exhaust smell in our coach since we purchased it 4 years ago.
After I resealed the engine access cover a few years ago we thought the problem was
solved as the smell seemed to be mostly gone. Recently we have been noticing the smell
more. Just before our last trip I once again removed the engine access cover and resealed
it again. The odor seems to come and go to some degree but rarely completely gone.
We have a washer/dryer in the back of the coach that exhausts to the outside.
I have plugged the vent cover with foam, but that doesn't seem to have solved the problem.
Any suggestions as to what might be the cause would be greatly appreciated.
RJ
2005 Country Coach Inspire #51264
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Old 06-26-2015, 05:59 PM   #2
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Possibly from the generator vice the engine? Diesel exhaust or diesel fuel smell?
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Old 06-26-2015, 08:38 PM   #3
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I had a similar problem with my previous coach, a Winnebago Journey with a 330 CAT engine and an exhaust brake. What I discovered was a clamp that attached the exhaust pipe to the turbo charger outlet had failed. Replaced clamp and some stainless steel flex pipe and problem went away.

I would suggest you gain access to the top of the engine and take a look at the connections from the turbo outlet and beyond. Soot around any of the joints would be a good indication of a leak.
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Old 06-26-2015, 08:45 PM   #4
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Diesel Exhaust Smell in Coach, HELP

Nearly same coach and no exhaust smell in coach. The above suggestions may prove helpful. I did open the access cover last fall to have the valve lash done & did not seal the opening. Just bolted it back in place. Our dryer vent is in same place. Good luck.


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Old 06-26-2015, 08:50 PM   #5
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How about your aqua heat for hot water or heat? Just a thought.
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Old 06-29-2015, 08:22 PM   #6
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Exhaust smell

Thank you for all of the responses/advice y'all have posted. I will investigate each suggestion given. Thanks again,
RJ
2005 Inspire #51264
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Old 06-29-2015, 08:50 PM   #7
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Quote:
Originally Posted by smlranger View Post
I had a similar problem with my previous coach, a Winnebago Journey with a 330 CAT engine and an exhaust brake. What I discovered was a clamp that attached the exhaust pipe to the turbo charger outlet had failed. Replaced clamp and some stainless steel flex pipe and problem went away.

I would suggest you gain access to the top of the engine and take a look at the connections from the turbo outlet and beyond. Soot around any of the joints would be a good indication of a leak.
This is the most likely culprit. With the cover removed, you will see black around the brake valve and signs of air blowing dust away if the break clamps are leaking.
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