Originally Posted by jcxperts
I got 2 tanks with 2 rubber lines I think along the frame that meet into a electric thing that looks like a splitter that I believe that has to do something with the fuel tank switch @ the dashboard... Then one rubber line coming from that splitter that goes to the fuel filter. I am kind of wondering how many feet of bio diesel compatible hose do I need to buy and which lines I have to replace exactly. I will appreciate your help. I already bought 50 O viton Rings for about $10, the other questions are: do the return line caps crack after using biodiesel? and also the IDI pump seals will be damaged? Should I buy a sediment oil filter to add before or after the lift pump? I would like to make this baby Biodiesel compatible, not planing on using SVO at all. Thank your for your help and sorry for been dumb but every time I go to autozone, napa or other import auto parts stores keep telling me to go online.
Double check your fuel lines from the tank upto the water seperator, as they should be bio-safe hard plastic lines grey and blue. Unless someone removed the factory lines your already good upto the stock water seperator. The only other rubber lines are short pieces:
1. water seperator to steel line
2. steel line to fuel transfer pump (on the passenger side of engine)
3. injection pump return line at pump
4. return line at the back of engine
I too have an 87 and running 100% homebrew Bio with no issues. The above mentioned rubber hose connections I changed out a year ago when I had my engine out.