1. Fuel is going to the engine - pump and relay work fine.
2. Plugs are getting spark
3. Engine refuses to start, fuel is present.
4. Compression is great.
5. It's not flooded, I let it sit for a day, manually drained fuel from intake.

So any clues? The spark appered to be random, but only after several tries when the battery was weak, needed constant jump after that to turn over. Thanks in advance.

Exhaust pluged up.
Disconnect exhaust from manifold and see if it will start.

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84 500 SEL (307,xxx miles)

OVP relay or dead battery giving too low a voltage when cranking -- if less than 9.5, no ignition.

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!