Very strange smell. Stumped

[Silberstrom]

(12-11-2022 )Grumpyjoewv Wrote:  Well I found one major leak. Rawze is this one of the connections you were talking about that has a gasket or an o-ring? It’s the clamp on the end of the exhaust manifold just above where the EGR cooler used to connect. Check picture below. Also found that my heater box has serious rust issues on top. Couldn’t be seen from the ground so I’m guessing this might be where the fumes are coming in.

It's been a while since I had a kw however when I did have one I had the same issue with the blower box, if you going to replace it there was a stainless model available aftermarket. In the short term aluminum roof tape might seal it temporarily until you can fix it correctly. That stuff seems to stick to anything it worked on the t800 I had.