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To replace the spark plugs from a 2004 Kia Sedona the plug wires ,must be removed from the engine. Unscrew the plugs. Properly space the new plugs and screw them in.
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Changing spark plugs is relatively easy. Disconnect the batter and spark plug cables, and remove the old spark plugs. Next replace the spark plugs with new ones, reconnect the spark plug cables and battery.
Remove the upper intake, then proceed as with the other plugs.
Yes, fouled spark plugs can cause engine shaking, and loss or power. I'm not sure about knocking but I'd guess that too.
having bad spark plugs could effect how the spark sparks and when it sparks. new plugs is never a bad idea
They Are under the Intake manifold like on my 04 kia sedona, You have to removethe center part of the manifold.
You spend 340.00 paying the dealer to take half the engine apart so that there is access to the spark plugs. Other than the access problem there is nothing different about changing Kia Spark plugs.
My 93 camry has no power from the distributor to the spark plugs. The car unable to start.
Bad spark plugs, spark plugs wires, etc.
I think my 07 manual says 100,000 miles
Your piston rings are probably bad. Which will cause compression loss, in effect you will loss power, and it will let oil trough and saturate your plugs.