[W126 Coupe] Off topic 190E 2.6

[Iain Gunn]

Gentlemen, I have a bit of a quandary that I thought the mass knowledge of this group may have some insight.
My daughters 190E 2.6 will not start.
Here's what happened: the car sat for a week and I went and started the car and it started and ran fine for about 25 minutes. I went to move the car , put it in reverse and the tires were frozen, gave a bit of gas and it stalled, would not start at that point. When it turns over it won't catch and it sounds like either its hydraulicing or way too much ignition advance. When I remove the coil wire it turns over normally.
I pulled the plugs, turned the engine by hand to TDC, as indicated by the markings on the harmonic balancer, #1 piston was at TDC and the rotor is pointing to #1 firing position. On the 190 the trigger for ignition is on the balancer, ( there's a proxy there with a pin sticking out of the balancer.)
Its sounds like a jumped timing chain, but this does not indicate so.
I have also inspected all the pistons for water, as 2.6's have a habit of blowing head gaskets, all OK. All cylinders are getting spark, I have fuel pressure. 
Last thing I did was pore some gas down though the throttle body and turned the engine over, it flashed back through the throttle body. This usually indicates, too much ignition timing or a jumped timing chain.
I'm now stumped. What else can influence the ignition timing? Back in the old days, you would back off the distributor, but as you know, this will not change the timing on these cars.

Any help or thoughts would be greatly appreciated.
                    Thanks, and happy new year.
                                                                    Iain
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