Starting issues, long cranking cascadia.

Why try the $70 obvious fix first when you can get into it for $2700?

 

Yeah. I just happen to be looking for that check valve as I read this. I was able to access the rear of the head by removing the air cleaner assay. I found the 90 and return line, I think the top one is return. There seems to be a straight thread to hose connection coming out of that, but I don't see a check valve or regulating device.

 

If you have the “check engine” and not just the MIL light, then you should be able to pull a code from the dash of your 15 Cascadia. Under diagnostics you should find at least 1 active code. Under either the DIAG or diagnostic menu you should find a SPN ## and FMI ## (or Fail). I have a feeling it’s going to list a code that’ll lead us back to the fuel filters. But if you can find it, it could give us a better idea of what’s wrong.