Reply to thread

Message: [QUOTE="CurtisF, post: 1112406, member: 829"] These two answered it for you...... On a gas engine (port injection, not the newer DI engines), the pressure in the rails is the pressure the fuel is injected. If you're running high boost applications, it's good at times to bump the fuel pressure up a bit to help compensate for the added pressure in the intake and to maintain a correct spray. On our 7.3L it's different. The fuel pressure at the rails is NOT the pressure of the fuel injected, instead it's simply the pressure of the fuel feeding the injectors. Once the fuel is inside the injector and at the injection event is when it's pressurized.... anywhere from 3,500psi all the way up to 21,000psi. When you're talking nozzle pressures of up to 21,000psi, now a small 10 or 20 psi bump at the rails doesn't mean anything at all anymore. Hopefully that helps explain it a little more in detail. [/QUOTE]

Verification

Random media

DSCF0880

IMG_20160905_185326723_HDR

IMG_20170703_174210

thestupiditburns

capped

reed_black_frame

Minotaur Parameters

IMAG0196

Custom Audio Build (extended cab 6.4L)

Latest posts

10R140 failure
- Latest: PSD-BLACK-CLOUD
- Friday at 1:04 PM
2017+ 6.7 Aluminum Super Duty
2010 headunit
- Latest: glog
- May 7, 2025
6.4 Tech
D
Turning off the Auxiliary powertrain control module
- Latest: donaldtfreeman
- May 6, 2025
6.0 Tech & FAQ
4r100 P0715/P0717 trouble codes.
- Latest: Tiha
- May 6, 2025
7.3 Tech & FAQ
I must be getting old… Exhaust is too loud
- Latest: ju015dd
- May 4, 2025
6.0 Aftermarket

Members online

No members online now.

Total: 486 (members: 0, guests: 486)

Top