Re: $1,200 Head
If you're concerned about water getting into your diesel whether from condensation or getting pumped in with the fuel, there's a simple solution. Install a water separator between the fuel tank and the injection pump.
Units like those made by Racor include the head which a filter screws into from the bottom and a clear bowl which screws onto the bottom of the filter. You can see if water is in the fuel because it will accumulate in the bowl. You can unscrew a fitting in the bottom of the bowl to drain the water.
The units also have a small pump in the head which you can use to pressurize the fuel lines for a faster start. Unit are available to fit any size diesel engine.