Bad Evap Cannister? on 2004 Hyundai Sonata

Check engine light on. car hard to start and hold idle after re-fueling. Code#PO441 "Evaporative Emision Controll System Incorrect Purge Flow". PLease let me know what replacement part is needed. V-6/2.7L engine with 80,000 miles runs great besides this issue. Tony T.

by in Schaumburg, IL on May 04, 2010
1 answer
ANSWER by on May 04, 2010
You need to do a thorough inspection of the Evaporative System. A code only really tells you what part of the system is malfunctioning, not the part. If you have incorrect purge flow, it could be many things. All this says is that the Purge flow is incorrect. I do Emissions work in California and Evap codes are really tough, some times. The State of CA will give us 2.3 hours to Diagnose an Evap code.
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check engine light on. negative purge flow indicated. hard to start after fill-up. Do I need evap purge valve? Where is it on engine? Help please.