Could it be a seized distributor?

What is your question?

I was having problems with water in fuel tank.changed fuel filter,was good for a few months then same thing,.x.Replaced filter again,added heet to tank began having problem again few months later .Haven't run truck for 8-9 month since,so now I have to move it and having ignition problems. I live right by the ocean...... engine isn't seized. everything electrical on truck (power windows,lock,lights,etc. ,checked fuses, battery fully charged.

What makes this problem better or worse?

sitting,

How long has your 2004 Nissan Frontier had this problem?

the fuel problem ,off n on ,little over a year. The ignition problem ,about 3-4 months