190E Won't start after new fuel distributor installed.
 

My shop is a general auto repair shop that does not always work on Mercedes. I figured I would help out a customer and install a new fuel distributor for her. She brought in a new unit. We would just install it and give her the car back. That's it.
Well, we put it on, carefully, but the car will not start. We put the old one back on and it will not start. Help.
Thanks, Rich