P304 code on 2001 Sonata

10-18-2005, 11:46 AM

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P304 code on 2001 Sonata

The dealer says this is due to two bad spark plugs and wires which will cost
$450 to fix. How difficult are these plugs to replace?

Thanx
Larry

10-18-2005, 01:14 PM

hyundaitech

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Re: P304 code on 2001 Sonata

If it's a v6, the rear bank requires removing the plenum. If it's a four
cylinder, it's very easy.

10-18-2005, 09:11 PM

Peter

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Re: P304 code on 2001 Sonata

The misfire problem can be solved by changing spark plugs and wires. You may
buy the parts and DIY to save money.

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