Gregg:

Will still have a fuel screen in tank. Fuel pump should definitely produce a liter or so in 30 sec when jumpered at the relay and hose disconnected from IP. Should produce considerably more pressure, though.

I still think you are showing signs of fuel starvation, especially if you are getting good to excellent milage.

You can also check the resistance of the coil -- should be 0.8 ohms, I think. If the coil is bad, you can get loss of spark at high speeds, ditto for high charge density -- the spark won't jump the gap when the pressure in the cylinder is high on compression, as it is when the throttle is open.

Peter

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1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!