Increased fuel consumption after running main tank to empty

[paparata Lurker Find all posts View Profile Close paparata]

I have a 90 series 1KZ turbo diesel and towing a camper. Have been travelling for 3 months. For first 2 months was getting about 16/100km. Then ran main tank to empty and vehicle stopped. Switched to auxilliary and carried on. Since then getting about 18/100km with same load. Vehicle had comprehensive service by Toyota before we set out.. ie all filters replaced. That was about 7000km ago. Air filter looks OK. Maybe I am being overly sensitive but could the increase in fuel usage be associated with running the tank to empty and dirty particles getting into the system??

[glen_ep Addicted PP Member Find all posts View Profile Close glen_ep]

I have a 90 series 1KZ turbo diesel and towing a camper. Have been travelling for 3 months. For first 2 months was getting about 16/100km. Then ran main tank to empty and vehicle stopped. Switched to auxilliary and carried on. Since then getting about 18/100km with same load. Vehicle had comprehensive service by Toyota before we set out.. ie all filters replaced. That was about 7000km ago. Air filter looks OK. Maybe I am being overly sensitive but could the increase in fuel usage be associated with running the tank to empty and dirty particles getting into the system??

Seems odd to use more fuel due to blockage. Unfortunately I don't know much about diesels.

If you've been traveling a few months perhaps the air filter is clogged up a bit? Dirty air filters can definitely make a difference on petrols.