TROUBLESHOOTING GUIDE - 31 POOR FUEL ECONOMY

[TROUBLESHOOTING HINTS] While fuel consumption is drastically increased during city driving, short-run operation, stop and go driving, extended winter warm-up periods, etc., as opposed to 'trip' mileage, an attempt should be made to determine these factors when confronted with 'poor mileage' conditions. However, since the operator is not always at fault, the following is offered. ① Operator depressing accelerator more than usual due to low engine power: • Poor ignition, • Low intake air amount, • Electric spark advance control malfunction, • Clutch slipping, • Exhaust component restricted. ② Air/Fuel mixture too rich: • High fuel line pressure. ③ Alcohol blended fuel used. ④ High vehicle load: • Low tire pressure, • Unrecommended tire used, • Brake dragging. ⑤ Fuel cut control malfunction. ⑥ High idle speed (Refer to page F-36).