O2 ?

[Jeff Stout]

Originally Posted by GUMP

Where is the O2 located in the header? I normally change my O2 about once a year or at the first sign of an issue.

Right at the collector, far from the head. Im going to look close at where the 4 tubes slide in collector now that Im thinking about it. One of the tubes is just the right length and only slides in collector a 1/4 inch. Thinking maybe that tube may have slid out just enough.