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SEAN_VANCE

How Often Change Spark Plugs?

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I just purchased a 98 gs400 with 115K, love the car...Im trying to find out how often the plugs need to be changed. It was LExus Serviced since new, so Im assuming its up to date with everything but I wonder every how many miles do the plugs need to be changed. Also, I took off that engine cover to look at the engine..man, its really weird looking. No distributor, no spark plug wirest, no spark plu wells...WTH! where are these components!? THanks.

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No distributor, no spark plug wirest, no spark plu wells...WTH! where are these components!? THanks.

They put them on my car <_< 30 thou on normal stock plugs. Iridiums will probabaly get you at least 100 thou. It's really a matter of pulling them and looking for worn(rounded) tips and or center electrode.

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