Skip writes:

<<<<At low airspeeds or sometimes in the climb, I have a small amount of exhaust getting into my cabin.  I can often smell it and occasionally it sets off my panel mounted CO detector until I deflate my door seal and ventilate the cabin for a couple of minutes.  I've done my best to seal every place where control rods go outside the cabin and even went so far as to have a whole new exhaust made when we found leaks in the slip joints of the old one.  I've also caulked every known hole in the firewall with high temp RTV.>>


At high AOA the exhaust can attach to the belly, sounds like it may be getting in via the flap and aileron pushrod openings. Also remember that there isn't much exhaust gas IN the engine compartment, it should be concentrated aft of the exhaust outlets.

Regards
Brent Regan