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Old 11-11-2005, 12:05 PM
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MrCjames MrCjames is offline
California Dreaming
Join Date: Jun 2003
Location: SF Bay Area
Posts: 599
Thumbs up Spark plug fouling

It seems you have it narrowed down. As a next step I might suggest a new spark plug wire on that cylinder, drive it and see what happens. My other thought: if the cylinder is fouling the spark plug in a short time frame as you described then you are experiencing an obvious mis-fire. You might want to have a compression and leak down test performed on that cylinder. This will help determine if the cylinder is mechanically capable of igniting the air/fuel mixture for maximum efficiency. Low compression and or high leak down will be a good indication that "you're going in!"

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