I wonder if the oil injection system in the RX -8 cars was/is injecting
too much oil.  I'm running my Renesis with Shon's alternate oil adapter
and his manual oil metering adjuster.  At max. oil  setting I used 2 oz.
oil while burning less than 1/2 gal. of fuel.  Oil was being spit out of
the intake past the throttle body!  I now have the oil injection rate
set at about 1/4 inch from the minimum oil injection rate.  It probably
is close to 3/4 oz. oil/ gal.  This is the same amount of oil Tracy is
mixing with the fuel.  I'm not flying - still ground running the engine
while working on the cowl and inlet system.

Dennis H

Dennis,

Oiling is certainly a possibility, and therefore poisioning the cat since the oil injection pumps are kind of a weak point in the system. Note that this isn't really an engine problem. This also bears no reference to our aircraft use. Fortunatly the oil pumps are pretty simple and if you have one that's working they usually last a long time. (after all they are filled with OIL!) There was also a mention of overheating some of the underhood components if the owner does a lot of high-performance motoring. Again not an aircraft problem.

Bill Jepson