88 Toyota Celica Gt 3S-FE I been having EXCESSIVE GAS CONSUMPTION.. and I have done the tune-up., fuel filter, f.reg., air filter, ..Full tank gets me only 150-160 miles on a full tank. I do need timing done. I also have ROUGH IDLE and slow exceleration from stop to go.
I have discoveredmy air intake hose hase a small tear and also has a melted area near the edge of throttle body. (It melted probably last yr when i had over -heating issues I assume.)
HELP. I have replaced the 02 SENSOR as well. I am told my COOLANT SENSOR is bad too. DOES any of this cause that extreme gass usage??