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  #1  
Old 02-27-2014, 02:00 PM
Northrimstroker Northrimstroker is offline
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Default V3 D2 back in veggie only 40PSI at pump

I have a 2001 F350 with the V3 installed in 2012 system has been running great up unill recently approx 400000 miles on veggie. I have read as many post on the subject as I can find it apears that my problem needs additional help.
Problems:
1. I am getting D2 pumping back in to veggi tankfrom return line, V Tank is full.
2. Green light in Auto does not come on.
3. only getting 40 to 45 psi at manifold from vegie tank.

I have replaced both the purge valve and check valve at manifold, new filter , new prescreen, I have about 80Psi when running on D2 when system is off, when in auto mode pressure drops to about 40 psi , when in manual mode pressure stays around 80 psi.

I have have power at the pump I can hear it running when I turn on the key when in auto.

Any suggestions?
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Old 02-27-2014, 03:14 PM
Clay Clay is offline
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Have you verified its the return line and not the supply line? Return means purge valve is letting d2 pass. Supply line means the check valve is letting d2 pass.
With the truck running on d2, pull the return line and see if there is d2 coming out. Then do this with the supply line.
Also verify that your purge cycle is only 8-10 seconds. Do you have an SSB or the older analog timer cards? The timmer wheel on the cars could have been bumped and turned way up which will pump a lot of d2 to the wvo tank when purging.
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Old 02-27-2014, 04:47 PM
Northrimstroker Northrimstroker is offline
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Yes it is the return line that is flowingback. Ill check the purge card dial make sur it didn't get bumped.
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Old 02-27-2014, 05:41 PM
Clay Clay is offline
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Quote:
Originally Posted by Northrimstroker View Post
Yes it is the return line that is flowingback. Ill check the purge card dial make sur it didn't get bumped.
You physically pulled the return and found diesel flowing back when you were burning diese? If thats the case your purge valve isnt closing for some reason.
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Old 03-05-2014, 03:01 PM
Northrimstroker Northrimstroker is offline
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So if the Purge valve is having issues since i just replaced it is there any warenty on the Part if it is defective?
I had to take a trip to Salt lake over the weekend and so to avoid d2 in the tank I put a clamp on the return Line this seemed to solve the problem of fuel running into the veggi tank.... then I started experiencing a different problem when the green switch was in the OFF position the Light would come on and stay on .
The Fuel pressure remained about 75-80 psi until i flipped the switch to auto mode then it would drop to around 40 psi.

What is the problem?
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Old 03-05-2014, 06:48 PM
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WingNut WingNut is offline
 
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More than likely this is sounding less like a defective purge valve and more that your purge valve is getting power when it shouldn't, forcing it open.

One quick way to check this is to unplug your purge valve and trying to run your truck again. (Obviously, you'll have to plug it back in to do the purge process).

If your purge valve opens when your truck is up to temp and running on Veg, then the issue is electrical somewhere in the analog brain or your switches.

If your purge valve is still open when you unplug it, then I would say it's a faulty purge valve.

(If I was a betting man, I would say the issue might actually be your switches, since I thought I saw that your green light was flashing at points that were unusual as well... but that's a guess....)


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Old 03-08-2014, 05:18 PM
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greaseguy greaseguy is offline
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Default flashing green light with v3 off

I am interested in what you find out. with my purge valve plugged in I get a flashing green light in auto and off positions. I ordered a purge valve and will see if that fixes my problems. I am curious if it is the switches or the purge valve or the brain. I will let you know what my new purge valve does.
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Old 03-12-2014, 05:01 PM
Northrimstroker Northrimstroker is offline
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I unpluged the purge valve when in auto mode I am still getting d2 back in tank through the return line. so it must be a faulty purge valve.
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Old 03-12-2014, 05:32 PM
Clay Clay is offline
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Quote:
Originally Posted by Northrimstroker View Post
I unpluged the purge valve when in auto mode I am still getting d2 back in tank through the return line. so it must be a faulty purge valve.
Pull it and clean it good. It likely has some sticky goo keeping it from closing all the way. I have seen this on mine before. Good time to pull the check valve also and clean it.
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Old 03-14-2014, 03:45 AM
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greaseguy greaseguy is offline
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Default just replaced purge valve

and plugged it in and everything running like it should, now if i could get my kitchen sink to drain...
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