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No.15 Emission Compliance: Notes

EMISSION COMPLIANCE - DESCRIPTION AND POSSIBLE CAUSE

15

Emission compliance

DESCRIPTION

Emission compliance test is failed.

POSSIBLE CAUSE

Vacuum lines leakage or blockage
Cooling system malfunction
Spark plug malfunction
Leakage from intake manifold
Erratic or no signal from CMP sensor
Inadequate fuel pressure
PCV valve malfunction or incorrect valve installation
EGR valve malfunction
Exhaust system clogging
Fuel tank ventilation system malfunction
Charcoal canister damage
Excessive carbon built up in combustion chamber
Improper engine compression
Improper valve timing
WARNING:
- The following troubleshooting flow chart contains the fuel system diagnosis and repair procedures. Read the following warnings before performing the fuel system services:
  - 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 .)