Marinated ribs advice

[tenny80]

The wife picked up some side ribs from the butcher that marinated already. Any tips for how to cook them? Never cooked ribs before that already have the sauce on them. Thinking I should foil them right away and cook at 225 for about 4hrs, then unfoil them for another hour?

 

[Chili Head]

Are they sauced or rubbed?
If it was me I would start at 250 unfoiled for a couple hours. then foil but Add some apple juice and or butter/margarine and wrap em tight then cook another hour . outa the foil now.. keep cooking until you get a slight resistance when poking with a tooth pick. Good luck and let us know how they turn out.