Mazda RX8 - No.15 Emission Compliance

NO.15 EMISSION COMPLIANCE
15 EMISSION COMPLIANCE
DESCRIPTION
Fails emissions test.
POSSIBLE
CAUSE
• Vacuum lines leakage or blockage
• Cooling system malfunction
• Spark plug malfunction
• Leakage from intake manifold
• Erratic signal from eccentric shaft position sensor
• Inadequate fuel pressure
• Exhaust system clogging
• Fuel tank ventilation system malfunction
• Charcoal canister damage
• Air cleaner element clogging or restriction
• Throttle body malfunction
• Jet air mixing system line blockage
• Spark leakage from high-tension leads
• Improper air/fuel mixture ratio control operation
• Catalyst converter malfunction
• Engine internal parts malfunction
• Excessive carbon is built up in combustion chamber
• Improper engine compression
! Engine internal malfunction
! Abnormal engine oil condition (viscosity, deterioration)
! Low oil pressure
! Excessive fuel pressure
! Air mixed in oil line
! Metering oil pump malfunction
• Leakage or clogging in oil pipe
• Leakage or clogging in oil nozzle
WARNING: The following troubleshooting flow chart contains fuel system diagnosis and
repair procedures. Read the following warnings before servicing fuel system:
• Fuel vapor is hazardous. It can easily ignite, causing serious injury and damage.
Always keep sparks and flames away from fuel.
• Fuel line spills and leakage are dangerous. Fuel can ignite and cause serious injuries
or death and damage. Fuel can also irritate skin and eyes. To prevent this, always
complete "BEFORE REPAIR PROCEDURE" and "AFTER REPAIR
PROCEDURE" described in this manual.
(See BEFORE REPAIR PROCEDURE .)
(See AFTER REPAIR PROCEDURE .)
(w) RX8-Engine Troubleshooting
Page 110