SVO TROUBLE
July 31, 2012 - 9:59am
Hey everybody im new to the site and new to the WVO life ...Long story short I built my own svo system and it worked great for a good couple couple thousand of miles and all the sudded it it doesnt want to work so good....ill start truck on diesel and soon as the WVO gets to about 160 degrees ill switch over and it will run but not make more then 10 psi and run really crummy Ive checked the oil for water and i filtered it down to 1 micron checked the vent to the tank i hade a solid 70 psi of fuel pressure while on svo so i was wondering if any one has ever had a problem like mine is there something that cam go wrong with the truck ..... I switch back to diesel and almost instant i get my power back and it will run great.... I checked my oil and it is conola oil i just cant figure it out so if anyone can help thanks
July 31, 2012 - 1:01pm
#2
2002 Ford F350 7.3 ....55 gal cel with heater then to a heated fuel filter then a heated fuel line into stock fuel bowl then into truck
August 1, 2012 - 6:30pm
#3
Drain the veg tank. Put a few gals of Diesel in it if it runs fine after switch over the pump is weak and cant push veg. Still acts up with diesel in it check valves and lines for blockage. Mighty vac best tool for flow testing lines.
August 2, 2012 - 10:41pm
#4
change filters
August 3, 2012 - 6:43am
#5
it will run but not make more then 10 psi and run really crummy
i hade a solid 70 psi of fuel pressure while on svo
Do you mean you had 70 psi while on WVO before you had the problem and now you have 10 psi?
Where did you take this pressure reading? Before WVO filter? After WVO filter? Right before the IP?
Do you have a lift pump for WVO and a lift pump for diesel or they share the same lift pump?
The problem area could be anywhere from your WVO tank to your WVO feed to your IP.
The answers to those questions would help to troubleshoot the problem.
August 13, 2012 - 5:56pm
#6
Do you mean you had 70 psi while on WVO before you had the problem and now you have 10 psi? Where did you take this pressure reading? Before WVO filter? After WVO filter? Right before the IP? Do you have a lift pump for WVO and a lift pump for diesel or they share the same lift pump? The problem area could be anywhere from your WVO tank to your WVO feed to your IP. The answers to those questions would help to troubleshoot the problem.
I usally have 60 70psi in the filter housing..... I run my veg oil into the stock filter housing so when i stitch to veg oil i most of the time have 60 or 65 psi ........ I get my fuel pressure inside the filter housing the diesel and wvo share pumps (i want to use a better fuel pump for wvo) and pretty quick im gunna put diesel in my wvo tank, n see how it runs
August 13, 2012 - 7:30pm
#7
I run my veg oil into the stock filter housing so when i stitch to veg oil i most of the time have 60 or 65 psi ........ I get my fuel pressure inside the filter housing the diesel and wvo share pumps
Your diesel and veggie both share the same lift pump and filter.
Runs perfect in diesel and NO GOOD in veggie.
Running in veggie with 10 psi = Fuel restriction on veggie side from tank to filter, parts that are NOT shared by diesel
That would includes: Vent on WVO tank, WVO fuel line, supply valve A.......to filter. (Parts NOT shared by diesel)
I would say all the parts shared by diesel are good.
August 13, 2012 - 8:32pm
#8
On wvo the fuel pressure will be like 60 or 65 psi so i dont have a problem with pressure its just when i switch over to wvo the truck becomes gutless all my power is gone and when i floor it the truck will only make about 10 psi of boost or less while using wvo but soon as a switch back to diesel truck runs great......... Could somthing be wrong with the truck or an eletrical sensor
August 13, 2012 - 9:46pm
#9
On wvo the fuel pressure will be like 60 or 65 psi
That's good.
when i floor it the truck will only make about 10 psi of boost or less while using wvo
So the wvo fuel pressure stayed at 60-65psi? Thought you said 10 psi was the wvo pressure.
When you floor it the engine failed to ramp to up the rpm = wvo fuel starvation = wvo fuel supply restriction
Again check for supply restriction.
switch back to diesel truck runs great......... Could somthing be wrong with the truck or an eletrical sensor
Nothing wrong with the truck running on diesel = Nothing wrong with the truck or an electrical sensor
August 13, 2012 - 11:26pm
#10
The 10psi was the boost.... When im on diesel i can make 30 to 35 psi but when im on wvo it will on mak 10 psi of boost.. witch if no fuel no boost so ill check into it see what i find
August 21, 2012 - 7:22am
#11
Change ur filter
August 21, 2012 - 6:16pm
#12
If u buy ur filters at autozone or advance or oreiley they do Not like veggie. i was lucky to get 1000 miles per filter. U can also check for air. put ur return line in a jar then turn ur key on
August 24, 2012 - 7:40am
#13
any updates?
August 25, 2012 - 12:46pm
#14
he must have got it fixxed
August 29, 2012 - 8:59am
#15
I've had trouble running on WVO for a while. When it started, I didn't have time to look into it. Then a mechanic told me I had grease in the coolant. So, I opened the tank and drained it. I also had some sort of "growths" on the bottom of tank. I cleaned it, etc. Also ordered/replaced new in-tank heat exhanger, coolant and Pex lines from tank in trunk to front. I have a 99 MB e300. I also changed the filter in the car. I don't have the coolant leak now, but...
I am using filters from Advance....could this be my problem. It runs OK on WVO until I "floor it" and then it gets real sluggish, etc. Then I have to flush and run on diesel. I'm going to order the filters from GC and if that doesn't help I may try to drain the tank again and put diesel in it to determine if my fuel pump is weak. What do you guys think?
Also, I get a wierd smell. Earlier, I thought it was from the "growth" and coolant/grease getting mixed, but I dont' know what is causing that smell now. Somewhere on here I read something about a turpentine smell, but I don't know what that smells like. I get this smell inside the car. To me, it still has somewhat of an antifreeze smell, but a little different??
The system work good for a few months when I had it installed by one of the guys that worked at GC. I live in KY and had the car shipped to me after installation.
Thanks in advance!
August 29, 2012 - 10:07am
#16
using filters from Advance....could this be my problem. It runs OK on WVO until I "floor it" and then it gets real sluggish, etc.
How many miles you had on the filter when this happened? Filters have different micron ratings. The lower the rating the better the
filtering and the faster to clog.
Could have air in system also.
I'm going to order the filters from GC and if that doesn't help
If GC filter has a higher micron rating it would help.
I may try to drain the tank again and put diesel in it to determine if my fuel pump is weak. What do you guys think?
Don't think you have a saparate lift pump for veggie oil. Your fuel pump works on diesel should have no problem working
on hot veggie.
Also, I get a wierd smell. Earlier, I thought it was from the "growth" and coolant/grease getting mixed, but I dont' know what is causing that smell now. Somewhere on here I read something about a turpentine smell, but I don't know what that smells like. I get this smell inside the car. To me, it still has somewhat of an antifreeze smell, but a little different??
Heater core leaking coolant???
Coolant leak in engine bay, vaporized and sucked into the cab???
Pressure Test cooling system to check for leak.
August 29, 2012 - 11:57am
#17
veggpwr, Thanks for getting back to me. The filter from Advance is Purolator and supposed to be crossed over from the Luberfiner number. I'll have to check the micron ratings. Finding the air leak will be hard! I have to check on the coolant leak.
August 31, 2012 - 9:37am
#18
Need some help! I have a 95 Dodge Cummins. Been Running with WVO for over a year. Trouble is that while running on WVO in about 10 to 15 minutes, I loose power. Fuel pressure after the filter drops and after the mechanical lift pump.
When I back flush for approx 10 sec and switch back to WVO everything is good again, Pressure returns and I go for another 10 to 15 min. I have opened the fuel cap/ No Change. Ran with Cap open still the same. I have pressurized tank and checked the flow into a bucket and was fine and had just cleaned out the tank so I was getting good clean oil. I use a ppe pump between the tank and filter. I changed the WVO fuel filter and still the same.
Can the valves be cleaned? Why would the valve act fine and then after a while mess up?
August 31, 2012 - 11:22am
#19
Fuel pressure after the filter drops
use a ppe pump between the tank and filter. I changed the WVO fuel filter and still the same.
So your set up is: veggie tank-----ppe pump-----veggie filter------feed valve A--------injection pump.
Monitor fuel pressure right after the ppe pump when loss power, suspect ppe pump defective, primary suspect.
Valve A could be sticky, NC port not fully open when soleniod is energized.
Can the valves be cleaned?
Yes.
Why would the valve act fine and then after a while mess up?
So I would say valves are OK
August 31, 2012 - 12:31pm
#20
Ok Thanks, I'll check on the way home tonight, I don't have a gauge but I'll take the output line off and check before back flushing.
August 31, 2012 - 7:13pm
#21
Suggest to have a fuel pressure gauge installed inside the cab to monitor the fuel pressure before the injection pump.
Just "T" off a 1/4" line before the injection pump into the cab and hook up to a pressure gauge.
The pressure gauge tell a lot about your lift pumps and filters operations.
Fuel Pressure Gauge = VOBD = Veggie On Board Diagnostic
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Weak fuel pump. On it's way out. Air leaks. Plugged lines. And the list goes on.
What vehicle, and parts used would help.
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92 300d gc kit.
99 f250 diy vegistroke under construction.