Question about Hyundai Motor 2004 Sonata

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Hard to start 2004 sonata

I have a 2004 sonata and it takes a longer time of cranking the eng. over to start but not always. And a couple of times so far pulling up to a light and stop the eng. died. I also noticed the last few times fueling up when I removed the fuel cap there was no vaccume presure. could this be the problem? Thanks for any help. Kathie

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Hi have a nice day!
Check EVAP Emission Control System Vent Circuit.

DESCRIPTION The evaporative system prevents hydrocarbon (HC) vapors from the fuel tank escaping into the atmosphere where they would form photochemical smog. Gasoline vapors are collected in the charcoal canister. The Canister Close Valve (CCV) closes off the air inlet to the canister for leak detection of the evaporative emission system. The CCV also prevents fuel vapors from escaping from the canister. When the engine purges HC vapors from canister, the clean air comes into the canister through canister air-filter and CCV. If open error message displayed is "P0447" If shorted error message is "P0448"

Posted on May 29, 2008

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