[nubiecanobie]

I am planning the conversion of my 88 7.3 IDI NA to WVO soon. The stock mechanical lift pump feeds the fuel filter/separator before going to the IP. The fuel filter is under pressure from the lift pump. Where should I tie in with the 3 way valve? I would like not to run veg through the diesel fuel filter. I'd like to use the mech lift pump also for veg if possible and not add an elec pump.

 

[350 long rod]

Look at the link I use the diagram 4 system sort of I return to tanks with a bypass for purge to return veggi to veg tank Diagrams with HIH for heat

 

[nubiecanobie]

Thanks for the link. How did you plumb the stock lift pump?

[ QUOTE ]
Look at the link I use the diagram 4 system sort of I return to tanks with a bypass for purge to return veggi to veg tank Diagrams with HIH for heat

[/ QUOTE ]

 

[MasterTrim]

For whatever it's worth adding an electric pump is easy and helps when purging air on a filter change.

 

[350 long rod]

................. /-stock filter-stock fuel line to stock 6port
IP - lift pump-6 port-
.................. \-HIH to veggi fuel filter

......................................... /- to stock return
............................. /-3 port-
return from IP -6 port...............\-to veggi return
............................ \- to veggi return HIH


You will need to change the way the return runs I capped it at the back of the motor and put a tee at the IP to feed the six portyou also need to cap the bleed line from the filter.Here is a link to pics of my truck.I found good info on greasels site for doing these trucks when I did mine


pics of fuel lines