Hey!

Im a 912 owner myself but my friend has a 1971 911T Targa - which... is having difficulties...?
Last fall he had the car sitting for 3 months outside (with a car cover) and after that it refused to start.
We've tried all sorts of tricks and have concluded that it spins freely, has gas, breathes fine, and has got spark. We've checked dizzycap and rotor, changed all wires etc - but it still wont start.

It has changed out the Marelli for a Bosch unit - got a Lumenition PM50 Ignition module and is fitted with an Optronic system instead of breaker points. New coil and when troubleshooting the Ignition module we do get sparks on all wires and the two plugs we checked.

It started fine earlier but now - on the turn of the key - will just spin the starter/crank the engine but not as much as a sputter. Timing wouldn't change just like that, would it?

Is anyone aware of specific Lumenition issues that we should look out for?

Thanks! // C