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<p class=MsoNormal><font size=3 color=blue face=Arial><span style='font-size:
12.0pt;font-family:Arial;color:blue'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 color=blue face=Arial><span style='font-size:
12.0pt;font-family:Arial;color:blue'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 face=Calibri><span style='font-size:12.0pt'>Ok,
when my last engine was pulled out everything was working perfectly, but..<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face=Calibri><span style='font-size:12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 face=Calibri><span style='font-size:12.0pt'>Since
the new one has gone in, there is a miss, sometimes slight, sometimes jolting
under light and moderate throttle, idle is always perfect and there are no
issues with heavy or <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face=Calibri><span style='font-size:12.0pt'>Full
throttle. Leaner mixtures make it worse, but even when a bit rich under
light to moderate throttle you can feel it miss from time to time.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face=Calibri><span style='font-size:12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 face=Calibri><span style='font-size:12.0pt'>What
Ive tried:<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face=Calibri><span style='font-size:12.0pt'>Switching
in and out the Mark 10 makes no difference, spraying up the dist and leads with
water does not change anything.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face=Calibri><span style='font-size:12.0pt'>Switched
out each injector, no difference.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face=Calibri><span style='font-size:12.0pt'>Replaced
head temp sensor with a 100 ohm resistor for testing at temp, no difference.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face=Calibri><span style='font-size:12.0pt'>No
apparent vacuum leaks<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face=Calibri><span style='font-size:12.0pt'>No
wire-wiggling issues<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face=Calibri><span style='font-size:12.0pt'>Swapped
out pressure sensor, same issue<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face=Calibri><span style='font-size:12.0pt'>Tends
to be worse when colder, better after a good warm soak, but in a long drive it
did get worse again after it got better<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face=Calibri><span style='font-size:12.0pt'>It
HAS at times, RUN PERFECTLY, so I don’t think it’s a setup problem
with anything in the system, and I don’t think its mixture calibration.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face=Calibri><span style='font-size:12.0pt'>Acted
just like a sticky injector but it isnt that, ignition SEEMS strong, but?
It does feel like that could be it. Everything checks OK though.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face=Calibri><span style='font-size:12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 face=Calibri><span style='font-size:12.0pt'>I
did find a broken wire at the manifold air temp sensor, and fixing that made a
BIG difference, but it only shifted the mixture curve lean, once adjusted back
to where it should be,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face=Calibri><span style='font-size:12.0pt'>Same
issues with occasional miss.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face=Calibri><span style='font-size:12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 face=Calibri><span style='font-size:12.0pt'>What
am I Missing? Or WHY am I missing?<br>
<br>
Keith<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=blue face=Arial><span style='font-size:
12.0pt;font-family:Arial;color:blue'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 color=blue face=Arial><span style='font-size:
12.0pt;font-family:Arial;color:blue'>BTW, THIS build, without the slop between
cam and crank seems to have considerably MORE power and a distinctively
different sound when floored! Remember, with the old build<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=blue face=Arial><span style='font-size:
12.0pt;font-family:Arial;color:blue'>it "sounded" fine above 2000 RPM
but when you really get into it on the highway now....
Swwwwwwwwwwwwweeeeeeeeeeeeeeetttt!!!<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=blue face=Arial><span style='font-size:
12.0pt;font-family:Arial;color:blue'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 color=blue face=Arial><span style='font-size:
12.0pt;font-family:Arial;color:blue'>and it SEEMS to be running cooler too,
although so is the weather around here now that its fall. Some of my
tuning headaches may have been variable valve timing that I DID NOT WANT!<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'><o:p> </o:p></span></font></p>
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