BioFuels Technologies Forum  

Go Back   BioFuels Technologies Forum > DODGE CUMMINS / HEAVY DUTY > 3rd Gen Cummins 03-07 Common Rail

Reply
 
Thread Tools Display Modes
  #1  
Old 02-26-2018, 06:44 PM
ourulz88's Avatar
ourulz88 ourulz88 is offline
Military Vegistroker
 
Join Date: Jun 2014
Location: Bremerton, WA
Miles on Grease: 50,000
$ Estimated Saved: 12,500
MacGyver Rating: 3
Posts: 75
Default Can't get WVO up to pressure

so i recently changed out my filter and cleaned the prescreen. I've driven over 100 miles now and I cant get the WVO to come up to pressure. D2 is going backwards through the system, in auto it says low pressure but the WVO pump is running. usually running it in manual for a bit fixes this like its priming the system, but this hasn't done anything. I dk if the check valve is stuck open or the pressure switch is stuck open. if anyone has any ideas on how to fix I would love to hear them.

all I have done so far is take out the prescreen entirely to see if it was jammed in there and that didn't fix anything so far. also to note I am using a napa equivalent of the Donaldson filter which has worked before and I usually don't have any issues with those filters.
__________________
2005 5.9l 2500 dodge ram, 6 speed, v4 kit
Reply With Quote
  #2  
Old 03-08-2018, 02:28 AM
jasco jasco is offline
VegiRammer
 
Join Date: Nov 2009
Location: Bloomington, IN
Posts: 305
Default

pull and clean the pressure regulator. There may be something jammed in there. Check to make sure your tank isn't building vacuum.

pull the line from the back of the manifold and run to a remote tank to eliminate a clog somewhere before the manifold.

Some have also said that cracking the filter can help if it is just being difficult to prime. This will be messy, but worth a shot.

how do you know WVO is going backwards through the system? I believe if you are running on auto and under pressure the return solenoid is still sending fuel to the Veggie tank. This would explain diesel in the veg tank.

If you really have wvo running backwards through your system them you definitely need to change it.
__________________
2006 Dodge 2500 Mega Cab Larime, 6 spd Manual
Reply With Quote
  #3  
Old 03-08-2018, 03:09 AM
greaseguy's Avatar
greaseguy greaseguy is offline
Senior Vegistroker
 
Join Date: Jan 2014
Location: Gilpin County Colorado
Miles on Grease: 85,000
$ Estimated Saved: almost enough for repairs
MacGyver Rating: 3.8
Posts: 352
Default Dodge vs ford

I am not sure if the dodge systems are the same as powerstrokes but if diesel is coming back to Wvo tank in the return line your purge valve is sticking open. You could pinch line with a vise grip and see if that helps build pressure
__________________
Marc
1999 early F250 EC, SB, ZF-6 Lariat V3 DFA
425,000 miles and counting
Reply With Quote
  #4  
Old 03-08-2018, 10:00 PM
jasco jasco is offline
VegiRammer
 
Join Date: Nov 2009
Location: Bloomington, IN
Posts: 305
Default

it's different. Pinching the return line will just make the truck run really rough. It isn't a purge it's a return selector on the Dodge. Either return to veg tank or return to diesel tank it is always returning to one of the tanks.
__________________
2006 Dodge 2500 Mega Cab Larime, 6 spd Manual

Last edited by jasco; 03-08-2018 at 10:02 PM.
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. The time now is 09:29 AM.


Powered by vBulletin® Version 3.7.2
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.