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Mike, Every time you push down on the metering plate with out using the
throttle spindle you are throwing a lot of gas in and not the right amount
of air mixed with it. I would not do that or you're going to ruin the 02
sensor if it isn't already and it's going to get black or blacker. It will
also blacken the plugs called gas foul.
Counter clock leans the mixture, but the engine needs to be hot and the 02
unplugged. Then plug the 02 back in after adjusting and go drive the car 5
to 10 miles to try to burn off the black soot if it will or you will never
adjust the seeking properly.
John Hervey


-----Original Message-----
From: dmcnews@xxxxxxxxxxxxxxx [mailto:dmcnews@xxxxxxxxxxxxxxx] On Behalf Of
mike clemens
Sent: Thursday, August 07, 2008 8:16 PM
To: dmcnews@xxxxxxxxxxxxxxx

David and Group,
You advised that I might enrichen the mixture a bit by turning the mixture
adjustment 1/8 turn CW.  Before I do that, I thought I'd let you know what I
found today and see if maybe I should do something else.  I pulled the O2
sensor and when it was installed two days ago it was fairly clean.  Today it
was BLACK and total run time on the engine was approx. 30 minutes since I
installed it.  I decided to pull a plug and see how it looked.  The plug was
brand new when I installed it a couple weeks ago.  Today it was totally
BLACK, which to me indicates the mixture is running way too rich.  Also, I
checked the timing and it was off 5 degrees, it was set at 8 degrees vice 13
the manual calls for.  I'm going to set the timing tomorrow, but, should I
not go the opposite way (CCW) with the mixture screw, so as to add more air
to the amount of fuel going in, kind of like what was happening when I
manually pushed down on the air flap while feeding
 in throttle??  Remember, like Elvis, I'm and MG guy and this is my first
fuel injection, so everything is new in this area.
Also, I pulled a sample from the coolant system and found no oil in it.  I
also found no coolant in the oil system, so I went ahead and flushed the
system again.  I still have a bit of foaming, but not as bad as before. 
After I solve this mixture problem, I'll flush the system again and see if
that gets rid of the foaming.
The idle speed microswitch is working as advertised and I am pulling 20
inches of vacuum.
Mike   TPS   1630


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