Originally Posted by sptt

I'm wondering if my Autozone replacement ignition coil may be causing my warm start issues? I notice my daughters '87 w124 cranks a lot stronger than my '91 300e. She has an aftermarket battery and I have a mercedes battery. I replaced the fuel accumlulator and it does start better. Was going to replace injectors next but maybe I need a real ignition coil or stronger amp cranking battery?