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hey there i have a corolla sr5 4af engine. i changed the plugs when i bought the car with every fluid and filter. when i changed the plugs they were real white. so i decided to check them 3 months later after changing them. i look again and they white again. i changed the timing to stock ( it was advanced 3 degrees). so im not sure where to go now. i checked the codes today at a local highschool and it said no stored codes. so im thinking it might be o2 sensor at exhaust manifold, or at cat? maybe air line leaking? the car runs fine, besides the plugs very white. any help would be appreciated.
iain
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Spark Plugs White, toyota corolla 89 sr5 4af
Jun 3 2009, 05:31 PM
