Hey all,

My problems with converting my 1981 300TDT to veggie oil continue. After priming system with hand held vacuum pump (the greasecar kit reroutes the primer pump so it's next to impossible to do it that way), the fuels drains back to the tank in about ten minutes. I have checked for leaks everywhere with no success. Any ideas? I'm about to lose my mind - the Greasecar forum isn't of much help.

A vacuum leak somewhere in the system will cause the fuel to leak back.