Metal shavings in Fuel line

I would at least have them inspected and tested. Some injectors have a metal mesh on the inlet side to keep large pieces of debris out. If your fuel pump has been pushing metal there is a good chance they could be clogging.

 

How much the guy is changing you and does he know what he doing you could try that and see what happens. What you mean by hard start ? Take a wild of cranking before it will start have to use starting fluid etc

 

You may have more problems with that mileage if u don't know any history on it

 

are you sure it is metal and not aluminum ? I do know of older trucks where fuel sending gauges break or tank baffles break & the movement in the tank causes them to scrape & get shaving in the fuel filter.

 

I read somewhere on here about those Detroit's having issues with the fuel pump going bad and dumping metal shavings in the fuel system.

 

I think its fairly common for the low pressure pump to go bad on these when the system is not primed properly after a fuel filter has been changed. You will see aluminum in the fuel filter housing. Give Interstate Detroit in Altoona, IA a call and see what they think, they are probably one of the best Detroit shops in the country.

 

Also its not a good idea on a dd15 to keep turning the engine over trying to start it if it doesn't start. Keep turning it over and over can ruin the fuel pump on those engines.