Glow Plugs and Fuel Lines

[jpococke]

I just obtained a Haynes manual, and noticed two types of glow plugs. I just pulled the glow plugs out of 220D and found both types. Is this normal to use both? Or should I use just one kind?
Fuel Lines. In my haste to get 220D started after setting for several years, I R&R fuel lines with aftermarket lines from store. Should I buy fuel lines from MB or will the aftermarket do? Still can't get the 220D to start. Seems like when I hand pump air in lines move alittle but still stays in one spot. Any suggestions on removing the air. I've tried the Inj. pump itself I'll pump and open port and air returns from injector. Does this mean that there is still a leak somewhere in system?

Thanks