Black exhaust

[asimms21]

We just bought our 242 jay flight SLX. A couple weeks ago I did a dry run in the driveway. The trailer is parked next to the house. Well today I noticed some black marks from the exhaust. Wasn't much but the trailer was running for 24 hours. When I wiped the siding with just a paper towel and water the black did not come completely off. See pics. (Pics are sideways) Any ideas?? It's brand new! I opened the door and no bugs.

We are going on our first trip and it's four days this Sunday. Hopefully it's nothing serious.

[Vaquero]

Make sure the burner tube is clear of obstruction.
Get a Mr. Clean magic eraser to clean the soot from the sidewall.

[Sundancer330]

I had the same thing happen first use, shut it down after a few minutes, restarted and all was good, bugs, cobwebs, etc. can get in the burner tube and cause this.

[Marcm157]

Definitely looks like something is causing a partial obstruction of the burner.

[asimms21]

Thanks. How do clear the tube? Air compressor?

[Tunce the traveler]

It's a simple adjustment with this screw. You need to adjust your air mixture so you get a clean burn,This tube slides in and out. Mine is 7 years old and as you can see no soot.