P304 code on 2001 Sonata

  • Thread starter Thread starter Jo
  • Start date Start date
J

Jo

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