'91 100q 5 injectors replaced - now car wont start

[Huw Powell]

> The mechanic told me that the engine is definitely shot but is
> unable to diagnose it unless he takes the head off.

Whoever mentioned that the "mechanic" should find a new line of work was
on the right track.

> I'm betting that the key sheared and the pulley no longer reads zero
>  with #1 at TDC.

Or the pulley shifted on the harmonic damper, either way, this is so
easy to check.

> If that's the case, there is a slim chance that  the valves escaped
> damage

Not really a problem.  This is not an interference engine.

The only way to lose compression on all cylinders from one "event" is 
for the valve timing to be off (ignoring the washdown theory, which has 
been tested in this case).