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I have just started running my engine on a test
stand. currently it will only do 4000 rpm. I noticed the rear rotor
exhaust has turned blue. I pulled the plugs and the rear lead and trail
plugs were very sooty. the front rotor trailing plug was clean, lead was
black. I suspect that my trailing ignition for the front plug may not be
running correctly. getting started I have been running whatever jets that
came with the carb. it appears I need to change them, to smaller I
assume. do I need to install a mixture gauge? does it attach to the
exhaust or intake? if so, which pipe(s)?
the facet electric pump delivers the rated 30
gals/hr [at zero psi], but my fuel pressure gauge only shows about 2 psi.
is it possible that I have fuel starvation above 4000 rpm? the specs say
that the pump has a 4-8 psi range. not sure why I am seeing only 2 psi.
even at idle. the fuel lift is all of a few inches. I removed the
fuel pressure regulator, but no difference.
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