HOME PRODUCTS FORUM RESOURCES KIT COMPARISON FREQUENTLY ASKED QUESTIONS  
GALLERY HISTORY VO THEORY SYSTEM MEDIA CONTACT  


Go Back   Forums > Vegetable Oil Forum > Technical discussion
Register User's Gallery FAQ Members List Calendar Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Display Modes
  #1  
Old 01-13-2012, 01:18 PM
Bilderberger's Avatar
Bilderberger Bilderberger is offline
Senior Member
 
Join Date: Dec 2007
Location: Lexington, Ohio
Posts: 236
Default Fuel Pressure Question 96 PS

I've installed a fuel pressure gauge on a 1996 PS, it has a mechanical pump driven off the cam in the engine valley.

My fuel pressure gauge is bouncing all over, back and forth with each cycle of the engine...is this "normal" for a mechanical pump to display pressure in this way?

I've installed the fuel pressure gauge as part of the WVo conversion.

I'm seeing pressure from 20lbs to 60lbs..from i can read . Needle in pressure gauge is actually "noisy", which running on diesel. When i switch to WVO, which has an electric pump, then gauge stabilzies at 70 psi.

phil
Reply With Quote
  #2  
Old 01-14-2012, 07:28 PM
seadog seadog is offline
Senior Member
 
Join Date: Oct 2007
Location: St. Louis MO (Metro)
Posts: 435
Default

Sounds like you may have a weak fuel pump.

http://www.powerstroke.org/forum/94-...-pressure.html
Reply With Quote
  #3  
Old 01-16-2012, 04:12 PM
Bilderberger's Avatar
Bilderberger Bilderberger is offline
Senior Member
 
Join Date: Dec 2007
Location: Lexington, Ohio
Posts: 236
Default Re:

Well, i changed the fuel filter, cleaned the screen going into the FPR which was full of soot, and changed the fuel pressure gauge...didnt' change that much....

I then changed out the mech. fuel pump, getting "better " pressure, so i eliminated that problem, changed all the "fuel lines", 4x of rubber lines, and upgraded all the clamps...

Appears to be getting better pressure, but have elminated this as a potential problem...this truck is going into daily service in a few days...so don't want any obvious issues coming up.

ALSO...FYI...WVO designs solenoids will NOT hold backpressure against the switch to the 3rd port...am solving this with a checkvalve

Phil
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not 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
Forum Jump


All times are GMT -8. The time now is 07:39 PM.


Powered by vBulletin® Version 3.7.2
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.