I have a 97 SR5 V-6 4x4 getting around 150 miles to the tank. Running out of ideas as to what the problem could be. Changed both o2 sensors, spark plugs with NKG, Maf sensor not showing codes but cleaned it anyway. 191,000 miles, bone stock, new tires 245/75/16 bf all terrain, wheels allingned, new shocks, brakes, front suspension just worked on. Could I have a gas leak that does not drip somewhere in the system? Injector problems? I live in Mexico so trying to explain to mechanics what i need is difficult so I need to be as informed as possiable. Any ideas for what to check next would greatly help.

 

Change the fuel filter, a clogged one can really affect gas mileage

 

So how many gallons of gas is getting you the miles you claim.

How are you measuring this??

Had a friend that his fuel gauge was so screwed up he thought he was getting about 5 miles to the gallon. Till I kept track of the gallons to the mileage .

When the gauge on empty it just took a little over 7 gallons to fill the tank.

Thinking something was really wrong he was happy to sell the 4Runner just over scrap price.$400.00

By that gauge I get around 120 miles till it is on empty