Hey guys.. I have a 2006 f350 superduty.6.0 powerstroke. Last week I put on new alternator. Truck been sitting about 3 weeks not started. Once put alternator on it fired right up and ran about 45 seconds to a minute and it quit and will not start. I check the secondary fuel filter on motor there were no fuel. Checked the filter on the frame and it's all black I guess some bacteria in fuel. All fuse good and relay. And the pump on frame runs when the key is on. Is there anyway of checking the pump and seeing if it's good. Cause I'm not getting fuel up to secondary. Any suggestions?.