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.

Asked by for the 1994 Mercedes-Benz C280
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.
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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.