Onan 8000 smells too much...Help

[Pine Stump]

I noticed the other day that our Onan 8000 generator on our 2009 All Star smells more than what I think is normal and I noticed some black soot on side of coach....Also the exhaust pipe has a lot of black soot in it.
To note all filters where just changed including air filter and oil etc.

Currently I do not see any visible smoke and I am not sure if I smelled anything before but it seams too much smell and soot.
I would think that it is not getting enough air to be doing this and if the correct filter was sold to me or for some reason I installed it wrong but that seams pretty straight foreword.

Think I will try running it without the filter this morning setting in the drive and see if the smell is reduced for starters..

Any thoughts that may help me..
Thanks Jay

[ptw]

I had a John Deere tractor that would smoke more when I put Flying J fuel in it compared to the diesel from the local Marathon station. You wouldn't notice a difference with the coach because of the pollution control equipment. Have you changed where you buy fuel?

Running the generator unloaded for long periods can also cause problems.

[RKins]

If you buy the filters from a Cummins dealer (anyone that services Cummins anything), you should be fine.
As you mentioned, you weren't paying attention to the smell before, so maybe PTW is on to something.

[Pine Stump]

Reading a thread and the post from this question I have it is normal to have soot and I would think the smell with this 09 Onan 8000 generator.