Question about 2001 Kia Optima
Kia optima thanks this is chris
Hope not too late to help. I have changed all plugs 2 times now myself. Mine is a 6 cylinder. The rear 3 plugs are impossible to remove without unbolting the intake manifold and other contraptions like the throttle/cruise control cable and 4 inch air intake tube. If you have engine work experience, great! If not, color code every disconnect then match up on the reinstall including plug cables.
Here is where you might not know what to do. First, the gasket (Planum) is a reusable metal gasket. Their is no replacement at Kia (crazy but I asked everywhere in NC) so be sure to tighten each bolt on the intake alternating and to speck amount, a 12 foot socket 1/4 inch wrench is plenty of torque so don't overdo it. I believe 15 lbs of torque is correct but verify. If you like taking risks just tighten using your wrist only (not biceps mustle) as tight as you can using wrist only now! [Rent a torque wrench or buy for $10 - $20 if you don't own one].
Since your doing all this work, change all plug wires and only use Platinum or better plugs that last at least 60k miles of use. You wont be able to change back 3 wires later by the way so buy 3 OEM Kia wires (not the kit) to save money if you want. I mixed plugg types and mine ran just fine!!
Plan on 4 meticulous hours your first time. My 2nd time took 1.5 hrs with a short break.
Posted on Feb 21, 2009
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Posted on Jan 02, 2017
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