Quote:
Originally Posted by Robert_Nash
As stupid as it might sound, make sure you filler cap is on well/correctly...I had a Z a couple of years ago that seemed very sensitive to this...apparently, modern fuel tanks are designed to maintain a certain amount of pressure and if the fuel filler cap isn't one properly, the pressure can't be maintained and you'll get the ubiquitous "check engine" light.
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This was very true of my 2004 Tiburon I had. If I didn't tighten the cap enough (until I heard one or two "clicks") the Check Engine light would come on. Got lucky once and it went off after a refill but usually I had to go to the dealer to get it turned off.
I believe I even failed emissions in VA. once and it was simply because I hadn't tightened the gas cap enough. Sensitive, indeed!
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