Changed Fuel Filter and Now Won't Start
OK, so I screwed up: 330HP C7 Diesel Cat engine, changed the single fuel filter and didn't pre-fill, didn't go through the prime sequence. Started normally, ran for 30 seconds or so then died. ...
Forum Discussion
Likely you have air in the line all the way from tank to filter base.
Answer is to slightly pressurize the fuel tank (put a rag/hand over the fill with an air chuck) while someone else opens the bleed screw on the filter base. If no bleed screw, slightly unscrew the filter. Do this until fuel with no bubbles runs out.
Then use the engine starter to do the rest.
Before loosening the filter while using the priming pump, confirm with your chassis maker (they are the ones who installed that single filter system) that the filter is on the PRESSURE side of the pump. If, as I suspect, it is on the SUCTION side of the pump, all you will do is suck more air into the system.
The injectors are electronic, not a good place to bleed. I would not do it that way.
Answer is to slightly pressurize the fuel tank (put a rag/hand over the fill with an air chuck) while someone else opens the bleed screw on the filter base. If no bleed screw, slightly unscrew the filter. Do this until fuel with no bubbles runs out.
Then use the engine starter to do the rest.
Before loosening the filter while using the priming pump, confirm with your chassis maker (they are the ones who installed that single filter system) that the filter is on the PRESSURE side of the pump. If, as I suspect, it is on the SUCTION side of the pump, all you will do is suck more air into the system.
The injectors are electronic, not a good place to bleed. I would not do it that way.
