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Old 04-27-2012, 01:47 AM
Join Date: Jan 2008
Location: oakland ca
Posts: 21
greasecar kit wired issue no diesel car stalls on wvo

so i have this greasecar kit 2 tanks in my 84 300sd not sure if i have an air issue on the wvo side... but i notice when i run on wvo it runs okay, slow and wack... (i been driving for like 4 month) unknown if thats normal, when im on diesel runs much stronger,i changed the filter about 4 times like ave. once a month, then loss power because im assuming it get filter gets clog up.

i notice when im driving on wvo tank and for some reason when my diesel tank is empty car dies...its like im running on blend In order for me to run on wvo, i need diesel in my reg tank,its wired is that normal? what could be wrong with my system?


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Old 04-27-2012, 12:22 PM
DeliveryValve's Avatar
Chairman of my Benz
Join Date: Jun 2006
Location: Central California
Posts: 4,143
It could be that you have a venting problem. Does the WVO tank cap swoosh when you open it? In any case, try loosing the cap on the WVO tank and drive it that way. If it improves then the cap or vent maybe clogged. If it is not, then I think you have an issue with the valves not closing off the diesel source that you are not using.

1983 123.133 California
- GreaseCar Veg System

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Old 04-28-2012, 01:52 AM
Join Date: Jan 2008
Location: oakland ca
Posts: 21
the cap is fine, how can i test the valve correctly
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Old 04-28-2012, 02:18 PM
83 300SD
Join Date: Mar 2007
Location: Shawano, WI
Posts: 691
Originally Posted by flipsta510fazn View Post
the cap is fine, how can i test the valve correctly
Go to Greasecar Vegetable Fuel Systems | Greasecar Vegetable Fuel Systems and find the maintenance tab. They have a writeup with pics for cleaning the cap and the pressure relief valve on the WVO tank.

Certified Registered Nurse Anesthetist (CRNA)
2002 F250 powerstroke with Plantdrive WVO conversion
1983 300SD 190K miles ,sold
2006 E320 CDI
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Old 05-01-2012, 01:55 PM
Registered User
Join Date: Dec 2005
Location: Danville, KY
Posts: 42
i had the same car and installed the kit with a friend of mine. i had the prob with the car running poorly on wvo - runs fine on diesel, switch over, runs badly, switch back, no prob. the problem turned out to be a bad priming pump. apparently when they get old, they go bad, fastlane overnited me a pump, solved the problem immediately.

One of the critical issues in running wvo is filtration, make sure you're doing that well also. When i started, i didn't do that well, and it created problems that cleared up when i got that right.

not sure about the shutting off when your diesel tank runs dry, this may be a stupid question, but are you sure you're running wvo?
84 300 D Turbo, 222,000 and rolling, veggie most of the time.
91 350 SDL veggie wannabe
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Old 05-03-2012, 03:19 AM
Join Date: Jan 2008
Location: oakland ca
Posts: 21
the prime pump was changed right before i bought the car in jan... and im pretty sure that im running on wvo cause the wvo tank drys up haha but good suggestions any other?
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Old 07-17-2012, 03:19 PM
ytmtnman's Avatar
Still going
Join Date: Jul 2006
Location: Acworth, NH
Posts: 277
Any hose or connection that allows air to be introduced can cause power loss. Greasecar systems loop the return so any air introduced will not purge unless you switch to diesel. Even a purge cycle sometimes will not purge all the air out.

I could not own any MB without the help from you...fellow forum members.

83 300td 207,XXX
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