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Well, I finished scraping the foam out of my new
cowling ram air scoop today. I put the cowling on and wanted to run the engine
to see if I was getting sufficient outside air into the throttlebody to get the
kind of rpm increases that I experienced with the top cowling removed last
week. Engine was hard to start, and when it did start, it was obvious that
it was only running on one rotor. I pulled the spark plugs for inspection,
and they looked to be in good, clean condition. I then removed one injector plug
and restarted the engine, and there was no change. (the injector closest to the
water pump). I then replaced that injector plug and removed the one
closest to the PSRU and the engine would not run at all. Well, now at
least I know which rotor is producing power. Because I ran the engine so
hard during the ground runs last week trying to eliminate the vapor lock
problem, (250 degrees water temp) I'm thinking it might be prudent to just
replace the spark plugs regardless of how good they appear on the
surface.
Next, I will switch
the two injector plugs to find out if it is the injector or the wiring to the
injector that is causing the problem. (after replacing the spark plugs, of
course). Any other hints or suggestions you guys might come up with will
be greatly appreciated. I did turn the prop thru a couple of times, and the
sucking sounds of the engine seem to indicate that the apex seals are probably
not suspect.
Will update my findings
soon. Paul Conner
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