Poor Gasoline Mileage; Unpleasant Odor - Toyota 3F-E Repair Manual Supplement

Problem
Poor gasoline Fuel leak
mileage
Air cleaner clogged
Incorrect ignition timing
EFI system problems
Idle speed too high
Spark plug faulty
EGR system always on
Low compression
Tires improperly inflated
Brakes drag
Problem

Unpleasant odor

Incorrect idle speed
Incorrect ignition timing
Vacuum leaks
EFI system problems
ENGINE MECHANICAL —Troubleshooting

POOR GASOLINE MILEAGE

Possible cause
• Injector faulty
• Deceleration fuel cut system faulty
UNPLEASANT ODOR
Possible cause
• PCV line
• EGR line
• Intake manifold
• Air intake chamber
• Throttle body
• ISC valve
• Brake booster line
Remedy
Repair as necessary
Check air cleaner
Reset timing
Repair as necessary
Check ISC system
Inspect plugs
Check EGR system
Check compression
Inflate tires to proper pressure
Troubleshoot brakes
Remedy
Check ISC system
Reset timing
Repair as necessary
Repair as necessary
EM-7
Page
EM-8
EM-11
FI-40,67
IG-6
EM-16
Page
FI-40,67
EM-11