purge time?

For discussing the modifications needed for diesel vehicles to run with 2 tank veggie oil conversions.

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purge time?

Postby gary » Mon Dec 22, 2008 2:58 pm

Is one better to er higher or lower on setting their purge time?

I have a clear pvc hose and it changes color at 30 sec but not completely till 1 min on my 02 vw golf.
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Postby SunWizard » Mon Dec 22, 2008 8:07 pm

That depends on how your system is plumbed, and how it switches for purge. On most, err on the long side is better since then you get a little D2 in the VO tank, instead of the opposite. It also varies greatly depending on the RPM you purge at, while driving it purges 2-3x faster.
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purge time

Postby gary » Sun Dec 28, 2008 10:34 am

I have the two valve setup with full return and use a vo control.
I set the purge times with rpm around 1900.
I stared stop watch as button is depressed but as i said the hose is not fully clear(diesel) for about 1 full min. ??
i guess it could be because these cars use such little fuel and when you switch over it is mixing?
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Postby coachgeo » Sun Dec 28, 2008 1:19 pm

the erra of that VW.... I say err on the long side. Make 100% sure it is full purged of WVO before shutting down and 100% sure no mixing of WVO could happen at the diesel tank when switching over to fueling with WVO
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Postby coachgeo » Sun Dec 28, 2008 1:20 pm

have you added the resistor to fool the computers so it changes the timing on your VW?
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