Engine does not start, only spins by

First of all, hello, my first message is here, but read it with you for a year. Drive a 200 20V myself, more can be found in the Audi 100/200 Forum. Let's get to my problem.
I have a 89er 3.6er standing here that doesn't start, if you turn the ignition key, you can only hear the engine just flipping without starting. Have only since today, has since 06.2001 shut down, so stood kapp three years, was from the pre-possession which bought in 01 but still drove himself into the hall, and when he wanted to get out in again he did not jump any more. He tried to fix his son again, because learned truck mechanic, so I don't know what makes me worry about more than the mistake itself. According to an SSP, it could be the engine payer and ignition time counter who were sitting on the gearbox on the left in the direction of driving under the murmur, or there are other culprits that could be. Had the same problem with Father's S4 20V Turbo a week ago, there the reverberator was broken. If only the engine went so crazy, the symptoms are identical. According to the SSP, however, the PT does not need the reverberator signal to start but only the engine speed and ignition time punk. Hope you can help me revive the engine.

Mfg Daniel