Hey all. I have a 300GD om617 that I've installed a second tank for wvo on. Have some questions about the plumbing.....

Everyone is talking about plugging the banjo on top of the diesel filter. I did not (yet?). I'll try to explain how i plumbed this:

Diesel tank->prefilter->primary diesel filter->feed valve->lift pump->IP!
VO tank->veg filter->feed valve->lift pump->IP!

So for the return I've tee'd Injector overflow and return from IP to common return valve. Plugged the Injector overflow hose on dieselfilter banjo.
Diesel: Return valve->banjo on dieselfilter->cigar hose to diesel tank.
veg: return valve->tee'd before veg filter (loop).

After some trouble i managed to bleed air from diesel side and started.

1: Will the lift pump suck diesel through the return line since the filter is under vacuum instead of pressure, and will this fuel bypass the filter? Or is the fuel returned to this banjo bolt going through the filter again?

2: Would it be a better solution to buy a 3rd valve, and get both filters after lift pump, so that they can be under pressure instead of vacuum?

I have also thought about getting an electric pump for the veg side, but I'd prefer to use the stock lift pump. Maybe to bleed air on veg side but not only this..

Hope you understand, unfortunately I cant make a diagram as I'm on my work computer.

Timmeeh. Libula libulla!