The car does have electronic fuel injection. It also has ignition points. Per the factory service manual, the timing is set with the vacuum line connected and set to 5 deg ATDC.

I do believe the timing advances when rev'd. I have been working this and other issues for a long while, so I have lost track. I will hook up a light and check to see if and how much it advances.

I have read about the injection points in the distributor, but haven't tried messing with them. Personally by the time I started messing with cars, it was the mid to late 80's and everything was electronic ignition. . So I am learning as I go. Hence my hesitation to start taking the distributor apart.

Teezer, as I mentioned I applied vacuum, but it quickly disapated. So I can only assume that using the "old days" method would yeild no tongue sticking.

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1999 MB SL500 (110,000 mi)
2004 Volvo V70 2.5T (220,000 mi)
2014 Tesla Model S 85 (136,000 mi)
MBCA member