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Ahhh, the joys of engine development. After
fiddling with getting the timing set (thanks to y'all for this info) I was
able to start my new engine. I ran it for a few minutes while checking for
leaks etc. I was thrilled it started
again.....however........
I found one leak coming from the top of the engine
where I had a heater hose inlet sealed off. It was tapped out earlier but
only clamped closed so I installed a bolt with some sealant on it and recovered
it with a end hose piece and clamped it shut. This proved a better
choice.
The larger concerns are this. When the engine
started the Engine Monitor was on, and I kept a diligent eye on it. After a
couple of glances at it in the cabin while looking at the engine I realized that
the monitor was not "monitoring". I grabbed my handheld laser
temp monitor and pointed it at the engine and temp was still ok.
At first I just noticed the RPM was not regersting (my first thought was I was
gonna get the NOP signal), then that the temp was not moving. After
shut down, I turned the monitor off and back on and instantly the monitor
started working again. Hmmmmmm. The monitor was mistakenly left
on overnight and I am guessing it "froze up" during this time, but I would have
not thought leaving it on would have done this. It also worked on my three
subsequent short starts. Of course my hope is that this was
an anomaly, but will stay aware that it did happen.
However the biggest problems follows. When the
engine started it was running a little fast, but did not seem too bad and I
throttled back and it slowed a bit. When I noticed that the monitor was not
processing data I grabbed the mixture knob and turned it to slow the engine
and to see if it made any difference. Damn, the mixture knob was not doing
ANYTHING. NOTHING. Turning it from left to right made no
difference. Damnit. I cut the fuel at this point, too
many issues. BTW, the prime function, cold start switch and
A/B inputs all seemed to work and would make a difference when
operated. But not the mixture knob.
After letting the engine cool a while
(the temps did rise pretty fast per my hand held laser temp gage and I
was pushing 220 after several minutes on a hot/humid Houston summer day) I
restarted to see if the engine monitor was working. It was. However,
the mixture know was not. I re-checked the other inputs and they
all worked. The engine was running pretty rough......gee, the mixture
actually makes a difference <g>.
After shut down I disconnected the batteries
(I have installed master battery cut-offs) and then the control
module and ECU and checked the wires between the two. This was just a
quick continuity check and the wire was good. I then took a meter and in
my non electrician mode attempted to check the actual knob. I place
leads on the two prongs that seem to be soldered to the control board and
turned the knob. The numbers changed up and down as expected when I turned
the know....so it seems that the knob itself is not the culprit, and the wire
seems ok. What else should I check and/or try? I kinda need the
mixture control to work.
Is there a way to test to to test to determine if
this knob is actually doing anything when the engine is not
running??????
Of course my timing sucks as Tracy is about to hit
Colorado.. So any solutions y'all may be able to provide should prove
especially useful.
I anxiously await y'alls response.
Maybe I should just go ride my loud motorcycle to
think thinks through. <g>
Thanks again.
All the best,
Chris Barber
Houston
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