Compression Ignition Addict
Join Date: Nov 2007
Location: Las Vegas, Nevada
Thanked 2 Times in 2 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
From what I am reading, I think you are confusing two different fluid systems. There is only one fuel pump on the 6.0 it is called the HFCM- (horizontal fuel conditioning module)
The HPOP (high pressure oil pump) feeds high pressure oil to actuate the injectors.
The LPOP (low pressure oil pump) supplies oil to the HPOP reservoir and to all the friction bearing surfaces, piston skirts etc.
If it is 10 psi low on fuel pressure, you will be damaging your injectors in short time. You need to find out which system is having the "low" pressure condition. Is the truck running ok?
2003 F250 SC/LB 6.0L 4X4