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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

--- On Wed, 8/6/08, David Teitelbaum <jtrealty@xxxxxxxxxxxxx> wrote:

From: David Teitelbaum <jtrealty@xxxxxxxxxxxxx>
To: dmcnews@xxxxxxxxxxxxxxx
Date: Wednesday, August 6, 2008, 11:18 AM

The foaming could be contaminates still in the system that need to be
flushed out. The other possability is a combustion chamber leak, ie a
popped head gasket from a previous overheat. The idle hunting is
probably a vacuum leak or leaks. They are cumulative, ie, many small
ones add up to a big problem. BTW that is NOT an idle speed screw. It
is the mixture adjustment. You might try turning it maybe 1/8 turn CW
to richen the mixture just a little. Will help with the hunting and
give you more power. Check that the idle micro is being set when the
throttle is at idle. You may have excessive play in the quadrant link.
David Teitelbaum
vin 10757


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