Fuel pressure psi - Ford Powerstroke Diesel Forum

Reply
 
LinkBack Thread Tools Display Modes
post #1 of 11 Old 12-21-2006, 01:58 PM Thread Starter
Powerstroke.org Rookie
 
Join Date: Dec 2006
Posts: 29
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Fuel pressure psi

I'm about to check my fuel pressure but I have no idea what it should be. Let's say that it comes in too low... fuel pump?
classicpw is offline  
post #2 of 11 Old 12-21-2006, 02:34 PM
BIG TRUCK, SMALL DRIVER
 
pipelayerjdh's Avatar
 
Join Date: Oct 2006
Location: Iva, SC
Posts: 5,877
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
I've read you need a minimim of 40 psi.

Derrick

My photobucket




'97 F-350 "FORDOR" 4X4 (Dually Conversion, Shackle Reversal, Technicooler , Auto Meter Gauges, 4" DIY Dual Exhaust w/ '08 tips, 4" DIY intake w/ AEM filter, Wicked Wheel 2, 360° thrust bearing, Homemade E-fuel conversion, Wildman Chip, 160cc DIY injectors , DIY IDM mod) 230K and counting...
pipelayerjdh is offline  
post #3 of 11 Old 12-21-2006, 06:40 PM
Powerstroke Diesel Enthusiast

 
Diesel_Diagnostician's Avatar
 
Join Date: Dec 2006
Location: Grey Bruce County
Posts: 223
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
What year of truck is it? Untill 1998.5 the pump was a two stage pump raising fuel pressure from 4 psi (from the tank) to 40 psi to fill the injectors...if its a 1998.5 and up then the pump is electrically operated and pressure should be 51 psi +/- 4 psi....i like to check the pressure on the heads and then on the outlet of the electric fuel pump...(driverside behind cab) just to see how much restriction their is in the system...
Diesel_Diagnostician is offline  
post #4 of 11 Old 12-22-2006, 09:24 AM Thread Starter
Powerstroke.org Rookie
 
Join Date: Dec 2006
Posts: 29
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
1997, OK I'm lost. Went to the auto parts store and the fuel pressure tester didn't come close to fitting, what are you guys using to test
classicpw is offline  
post #5 of 11 Old 12-22-2006, 10:51 AM
Powerstroke.org Rookie
 
Join Date: Dec 2006
Posts: 14
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
I just took an old fuel filter top and tapped it with a schrader valve. Anytime I need to test pressure I just put it on and then test. Especially helpful on the ones without spots on the heads and frankly easier anyway. Just an idea.
klpaul is offline  
post #6 of 11 Old 12-22-2006, 10:58 AM
Powerstroke Techie

 
djsdiesel's Avatar
 
Join Date: Nov 2006
Location: Moses Lake, WA
Posts: 723
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
on a 97 there is a schrader valve on the back side of fuel filter housing. on 99+ you either have to get some fittings and install a schrader valve on the filter housing or do like klpaul and I have done a put a schrader valve in a filter lid and install it when you need to check pressure.

99.5 F-250 PSD AT 4x4, 4in lift, 37 13.5 18 Pro comp Extreme A/T's, S&B Intake, GTP38R, DP Tuner custom programs (140 Agg., 120 sled pull, 80 tow and 60 tow), Rosewood DIY stage 2 injectors, BTS Trans, 5in exhaust no muffler, 6 oh intercooler, Ford AIC, EBPV delete, Foil delete, T/C lock up mod, Pusher Fuel Pump, Three Chime train Horns

djsdiesel is offline  
post #7 of 11 Old 12-22-2006, 12:21 PM
Powerstroke.org Fanatic
 
Tx_Atty's Avatar
 
Join Date: Jun 2006
Location: Lubbock, TX
Posts: 90
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
the 97 will be around 55psi but International recommends up to 70. I plan to shim mine to 65 when I get the chance.

If you just press a gauge against the schrader you are going to spew fuel everywhere. I replaced mine with a fitting that will do one of two things (your option) - fit directly to a gauge, or, attach a fuel line to put the gauge elsewhere. Currently I have a fuel line going to a pressure isolator that then shoots a line into my cab. It is plugged at the moment but I am buying a glycerin filled gauge (to absorb the pulses from the mechanical pump) next week so i can monitor pressure at idle and on the road.

for reference, do not use a dry mechanical gauge. THe needle flutter from the mechanical pump will make the gauge completely illegible. You need a glycerine filled gauge no matter how you set it all up.

'97 F-350 CC 4x4, 91K, 4" turbo back, Tymar intake, rhino liner, formerly running B-100 now around B20, AM Phantom gauges (hate them), electrified AC mod, 203* thermo, Edge Evolution, HPX. Fumoto valve waiting to go on...

Pictures
Tx_Atty is offline  
post #8 of 11 Old 12-22-2006, 01:39 PM Thread Starter
Powerstroke.org Rookie
 
Join Date: Dec 2006
Posts: 29
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Thanks for the responses guys. What is the valve that looks like tire pressure fitting complete with cap on the front right of the filter? I'm ready to just replace the fuel pump. The truck has 120K on it and the pump is all corroded and nasty looking. It has to need a new one soon. I spoke to an area Ford mechanic and he seems to think that's the problem. He claims that they go up every 100k. I just don't get it. The truck runs great, fires up like it's new, it just starts to die after around 10 minutes of driving, it'll drive fine at 5-10 mph, but if i press the gas too hard it starts to flutter and sputter, but has not died.
classicpw is offline  
post #9 of 11 Old 12-22-2006, 02:34 PM
Powerstroke Techie

 
djsdiesel's Avatar
 
Join Date: Nov 2006
Location: Moses Lake, WA
Posts: 723
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
thats where you check the fuel pressure, have you tried replaceing the fuel filter. I just replaced one about two weaks ago that had 175k on the original pump. And it was replaced because it was leaking not because it wasnt making fuel pressure.

99.5 F-250 PSD AT 4x4, 4in lift, 37 13.5 18 Pro comp Extreme A/T's, S&B Intake, GTP38R, DP Tuner custom programs (140 Agg., 120 sled pull, 80 tow and 60 tow), Rosewood DIY stage 2 injectors, BTS Trans, 5in exhaust no muffler, 6 oh intercooler, Ford AIC, EBPV delete, Foil delete, T/C lock up mod, Pusher Fuel Pump, Three Chime train Horns

djsdiesel is offline  
post #10 of 11 Old 12-22-2006, 02:42 PM Thread Starter
Powerstroke.org Rookie
 
Join Date: Dec 2006
Posts: 29
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Just replaced it last week.
classicpw is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Ford Powerstroke Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome