CV7132005 Posted December 17, 2018 Share Posted December 17, 2018 Hello everyone, I'm new to the group. I have a 2005 cv713 with a AI 370. I was wondering what the fuel pressure should be at idle and operating range. I'm having a little bit of a power issue all of a sudden. Thanks. Quote Link to comment https://www.bigmacktrucks.com/topic/55068-fuel-pressure/ Share on other sites More sharing options...
Mack Technician Posted December 17, 2018 Share Posted December 17, 2018 (edited) Spec Sheet on Page 4, under "AMI power increase" by 03' Big Red. Should be 50-85 PSI. Might find some other good pointers in Big Red's AMI post? Edited December 17, 2018 by Mack Technician Quote Link to comment https://www.bigmacktrucks.com/topic/55068-fuel-pressure/#findComment-411462 Share on other sites More sharing options...
CV7132005 Posted December 17, 2018 Author Share Posted December 17, 2018 Thanks. I'm not sure where to find that though Quote Link to comment https://www.bigmacktrucks.com/topic/55068-fuel-pressure/#findComment-411464 Share on other sites More sharing options...
Mack Technician Posted December 17, 2018 Share Posted December 17, 2018 Tap the link I sent and scroll page 4 till you see a sheet with buncha displayed numbers. It’s a handy summary MackPro put together of general AI engine specs. Quote Link to comment https://www.bigmacktrucks.com/topic/55068-fuel-pressure/#findComment-411467 Share on other sites More sharing options...
CV7132005 Posted December 17, 2018 Author Share Posted December 17, 2018 Got it. Thanks. Quote Link to comment https://www.bigmacktrucks.com/topic/55068-fuel-pressure/#findComment-411469 Share on other sites More sharing options...
Mackpro Posted December 17, 2018 Share Posted December 17, 2018 From what I remember the Original style ETECH engines came with 60 psi overflow valve, there latter came a 100 psi valve that solved some rough idle issues in a few UPS trucks we saw. The ETECH overflow valve has a barb on it for the plastic fuel return lines from the head/injectors. This is a easy way to tell a ETECH engine from a CCRS/ASET engines. Plastic line= ETECH. No plastic line =CCRS/ASET. Starting in 2002 with the CCRS on through the to end of the ASET engines the the fuel valve opened at 60 psi. So fuel psi should be at 60 + at idle and go up as rpms increase. If psi goes down as rpms go up you got a problem. Quote Link to comment https://www.bigmacktrucks.com/topic/55068-fuel-pressure/#findComment-411472 Share on other sites More sharing options...
garcia.freddy@att.net Posted April 9, 2019 Share Posted April 9, 2019 Hi, I have a 2005 Mack vision CXN613, it was running and turn off by it self and then didn't want to start back on.. the fault codes are 8-1 to 8-6 .. any advice will be greatly appreciated... Quote Link to comment https://www.bigmacktrucks.com/topic/55068-fuel-pressure/#findComment-420208 Share on other sites More sharing options...
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