Svl90-2 no-start

[precisionE&P]

I have an svl90-2 with what seems to be a low fuel pressure on crank issue. On crank I'm only getting between 500 and 1,000 PSI of pressure instead of the 5000 required but if you can get it running through unsanctioned methods AKA summer in a can, the machine starts up and runs perfectly fine with fuel rail sitting at 6700 to 7100 with 6950 Target. My gut is telling me SCV valve solely on the fact that the pressure fluctuates so much but if I could get another set of thoughts that would be great. Also thinking I might switch the 12v sending pump just for fun. At 35$ to take that out of the equation might be worth it. In case it needs to be said, im on a seccond set of fuel filters so that is not the issue. I also put a 10ft fuel line off the output of the filter head and get decent steady flow although I think it could be better.

 

[whitetiger]

I have an svl90-2 with what seems to be a low fuel pressure on crank issue. On crank I'm only getting between 500 and 1,000 PSI of pressure instead of the 5000 required but if you can get it running through unsanctioned methods AKA summer in a can, the machine starts up and runs perfectly fine with fuel rail sitting at 6700 to 7100 with 6950 Target. My gut is telling me SCV valve solely on the fact that the pressure fluctuates so much but if I could get another set of thoughts that would be great. Also thinking I might switch the 12v sending pump just for fun. At 35$ to take that out of the equation might be worth it. In case it needs to be said, im on a seccond set of fuel filters so that is not the issue. I also put a 10ft fuel line off the output of the filter head and get decent steady flow although I think it could be better.

What are the Target and actual SCV voltages?
What DTC's do you have?

 

[Russell King]

If “summer in a can” means starting fluid (ether), that could be the problem. That can fire off at the wrong time and bend rods or damage rings making diesels hard to start due to compression problems.