Equipment CATcs54 Engine C4.4 Low fuel pressure during high load operation Common rail pressure reference value and 200 PSI variation Common rail pressure value range is high at idle I think the Common Rail pump problem. I ask for your good opinion. See the video 캐터필라 건설기계 중장비 전문 서비스 부품 예방정비 : 네이버 블로그 blog.naver.com If there is a problem with the pump, replace the solenoid valve or the entire pump head Is it possible? https://blog.naver.com/carmanner/223486113438
First step is to verify low pressure, or supply fuel. A pressure/vacuum gage is needed to ensure the common rail pump is not starved for fuel. And yes, should be able to replace solenoid. ( SCV suction control valve or IMV inlet metering valve) same thing.
Thank you. I'll check the low pressure fuel pressure
Check the electric fuel pump as well.