Symptom

Probable cause

Remedy

Engine will not start or hard to start

Vacuum hose disconnected or damaged

Malfunction of the EVAP Canister

Purge Solenoid Valve

Repair or replace

Repair or replace

Rough idle or engine stalls

Vacuum hose disconnected or damaged

Malfunction of the PCV vavle

Malfunction of the evaporative emission canister purge system

Repair or replace

Replace

Check the system; if there is a problem, check related components parts

Excessive oil consumption

Positive crankcase ventilation line clogged

Check positive crankcase ventilation system