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The Number One spark plug-- which is the one in front nearest the fan. Make sure to remove and plug any vacuum lines leading to the distributor before setting timing, and set with a warmed-up engine. When you finish, the vacuum line with suction on it at idle goes on the vacuum port nearest the distributor cap.

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โˆ™ 2005-11-21 04:39:50
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Q: Which spark plug is used on a 1985 Celica GTS to check timing?
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