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As Bosozuku suggests, check for spark. If the car has no spark trigger, it won't run fuel pumps either.
A little easier way to test:
Pull the coil wire off the dist cap, and tuck it in by the left hood hinge. It should stay there with the brass end exposed but not touching anything- leave a 1/4 inch or less gap, but at least SOME gap.
Crank the engine- with the wire in this position you can observe it from the driver's door area while you reach in and turn the key.
I suspect no spark. If there IS spark, proceed to check out the fuel system starting with a new fuel pump relay. (Or resolder, whichever works better for you.)
If no spark, as you say you've checked everything- if you can, try to read voltage at the coil. Ought to be essentially 12V (or battery volts -0.5 or so) at the coil terminals with the key on. If no voltage, inspect this troublesome little plug under or near the coil. It's a grey two pin plug and one just wasted a day of my time on a friend's '87 244. I put in a new ignition computer, distributor, wires, coil, and inspected the harness to the ignition computer. Turned out to be this guy, simply not seated enough. I crimped the socket pins a little tighter and seated it fully, now the car runs perfectly and has had no stalling. You might have gotten some of your cleaner in it, or disturbed it during your work. Check it out, it's a simple and free fix. With it disconnected, coil primary voltage is like 0.4V. Like I said, our example was intermittent.
GOOD LUCK!!!
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Rob Bareiss, New London CT ::: '87 244DL/M47- 225K, 88 744GLE- 209K, 91 244 183K. Also responsible for the care and feeding of: 88 745GLE, 229K, 88 244GL, 146K, 87 244DL, 235K, 88 245DL, 236K
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