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Old 08-29-2006, 05:26 PM
Blevinsax's Avatar
'91 350SD GreaseCar
Join Date: Jun 2006
Location: Las Vegas, NV
Posts: 480
Question 'Boost' pump for GreaseCar WVO system on Mercedes...

Hello folks! My '91 350SD has a newly installed WVO system by GreaseCar and although it runs GREAT on WVO, the only way I can avoid stalling when I make the switch from diesel to WVO is to run the motor up to about 2500-3000 rpm's and flip the switch. It blips a little then will keep running smoothly, assuming the oil is hot enough.

I have emailed GreaseCar and now spoken with them on the phone and they seem to resist the idea that I do in fact need the additional 'boost' pump fo the WVO. I find that a little ironic because they also sell a boost pump for this exact symptom! Unfortunately it is a bit more expensive than a typical fuel pump, but they say it is designed to pump WVO and that it will not seize and burn out after 2 hours like some standard fuel pumps.

Has anyone else encountered a similar situation? I've already ordered the pump from GreaseCar on my mechanic's advice, but I'm just curious if anyone else has experienced this, too.
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Old 08-29-2006, 05:35 PM
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Something is not working right if you need to rev the engine that way. Who installed your kit? The boost pump is for lag that is mild, not because the car stalls. Fix the problem. I think it's sucking air somewhere.
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