I am having problems getting my WVO system to work. It has worked well for over a year (20,000 miles!), but now only works on diesel. I've traced everything out and found that the booster pump (FRB5) back at the rear tank won't pump WVO. It pumps diesel at 10 gpm but only pumps WVO at about 2 gpm. I replaced the pump with a new pump and it works identically. I removed the pump and tested it on my bench with short hose lengths with clean WVO and diesel running directly off of a battery and it is still the same. I don't think that it is temperature related because the problems started on a 100 degree California day. The oil itself appears to be liquid gold and looks good enough to cook in again. The oil itself is not that viscous. I tried a 50/50 blend of WVO and diesel and it pumps at about 4 gpm, which is good enough, I guess. I just hate buying diesel. What is going on? Is there an internal screen that is getting blocked in the pump? I collect WVO from about 4 places. Maybe there is something new in the oil that is bad. The oil is like dark ice tea with no sediment or clouding after settling and filtering. The pump appears to be struggling to pump WVO, with a steady thump thump thump. On diesel it clicks away at a furious pace. I have a pre-filter (the clear ones) before the pump and the pump is new, so I doubt the pump could be damaged.
Any ideas?
Please help! I am considering going back to diesel and selling the WVO conversion on Ebay! My car pool partners are starting to complain.
Thanks,
Bill in Tehachapi