Tractor doesn't have a "through the hood" airstack.
The pre-cleaner under the hood got clogged with debris causing the engine to pull exhaust back through the aspirator and set the debris in the air cleaner on fire!
<img src = "http://oi64.tinypic.com/2hr1g87.jpg">
<img src = "http://oi64.tinypic.com/2r61vlv.jpg">
<img src = "http://oi67.tinypic.com/32zml9i.jpg">
Even melted a hole in the compressor housing, thought I had a better photo of that, but you can see the hole in the housing in the ipper right area of THIS photo:
<img src = "http://oi64.tinypic.com/15d2jvq.jpg">
The pre-cleaner under the hood got clogged with debris causing the engine to pull exhaust back through the aspirator and set the debris in the air cleaner on fire!
<img src = "http://oi64.tinypic.com/2hr1g87.jpg">
<img src = "http://oi64.tinypic.com/2r61vlv.jpg">
<img src = "http://oi67.tinypic.com/32zml9i.jpg">
Even melted a hole in the compressor housing, thought I had a better photo of that, but you can see the hole in the housing in the ipper right area of THIS photo:
<img src = "http://oi64.tinypic.com/15d2jvq.jpg">