Car won't start. on 1994 Mercedes-Benz C280

Has been unused for about a year. It started yesterday. We let it run about 10 minutes. Now it refuses to start again. Pease help.

2 answers 2 comments
There are many possibilities, you will need to diagnose the problem, or have it diagnosed. Do you have a fuel pressure gauge? Are the spark plugs firing?
Thanks, BretB.Don't have a fuel pressure gauge, but will get one. This at least gives us a place to start. Had already figured that we needed to check to see if the plugs were firing. Should have gotten all that old gas out before starting it up.
car starts for few min then dies out wont start for another hour what is it
Try the crankshaft sensor! This is a common problem in c280 I was told.